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103012120 = 2355214943
BaseRepresentation
bin1100010001111…
…01011100011000
321011211120001201
412020331130120
5202332341440
614115523544
72360405611
oct610753430
9234746051
10103012120
1153169592
122a5b95b4
1318459823
14d976c08
15909c19a
hex623d718

103012120 has 32 divisors (see below), whose sum is σ = 232269120. Its totient is φ = 41117440.

The previous prime is 103012097. The next prime is 103012121. The reversal of 103012120 is 21210301.

It is a super-2 number, since 2×1030121202 = 21222993733788800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 103012097 and 103012106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103012121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18369 + ... + 23311.

It is an arithmetic number, because the mean of its divisors is an integer number (7258410).

Almost surely, 2103012120 is an apocalyptic number.

103012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103012120 is an abundant number, since it is smaller than the sum of its proper divisors (129257000).

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

103012120 is a wasteful number, since it uses less digits than its factorization.

103012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5475 (or 5471 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 103012120 is about 10149.4886570704. The cubic root of 103012120 is about 468.7732001554.

Adding to 103012120 its reverse (21210301), we get a palindrome (124222421).

It can be divided in two parts, 10301 and 2120, that added together give a palindrome (12421).

The spelling of 103012120 in words is "one hundred three million, twelve thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 521 1042 2084 2605 4168 4943 5210 9886 10420 19772 20840 24715 39544 49430 98860 197720 2575303 5150606 10301212 12876515 20602424 25753030 51506060 103012120