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124213103120 = 2451552663789
BaseRepresentation
bin111001110101110101…
…1011000101000010000
3102212121121212102110202
41303223223120220100
54013342023244440
6133021313514332
711655054645611
oct1635353305020
9385547772422
10124213103120
1148751070927
12200a68729a8
13b9370001b2
146024acdc08
15336ecc2615
hex1cebad8a10

124213103120 has 20 divisors (see below), whose sum is σ = 288795464940. Its totient is φ = 49685241216.

The previous prime is 124213103111. The next prime is 124213103129. The reversal of 124213103120 is 21301312421.

It is an interprime number because it is at equal distance from previous prime (124213103111) and next prime (124213103129).

It can be written as a sum of positive squares in 2 ways, for example, as 57262575616 + 66950527504 = 239296^2 + 258748^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 124213103092 and 124213103101.

It is not an unprimeable number, because it can be changed into a prime (124213103129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776331815 + ... + 776331974.

It is an arithmetic number, because the mean of its divisors is an integer number (14439773247).

Almost surely, 2124213103120 is an apocalyptic number.

124213103120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

124213103120 is an abundant number, since it is smaller than the sum of its proper divisors (164582361820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

124213103120 is a wasteful number, since it uses less digits than its factorization.

124213103120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1552663802 (or 1552663796 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 124213103120 its reverse (21301312421), we get a palindrome (145514415541).

The spelling of 124213103120 in words is "one hundred twenty-four billion, two hundred thirteen million, one hundred three thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1552663789 3105327578 6210655156 7763318945 12421310312 15526637890 24842620624 31053275780 62106551560 124213103120