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120124220 = 22512747293
BaseRepresentation
bin1110010100011…
…11001100111100
322101000221110012
413022033030330
5221222433340
615530402352
72656016246
oct712171474
9271027405
10120124220
1161897117
12342903b8
131bb6b628
1411d4d096
15a82c565
hex728f33c

120124220 has 24 divisors (see below), whose sum is σ = 254252544. Its totient is φ = 47670336.

The previous prime is 120124211. The next prime is 120124223. The reversal of 120124220 is 22421021.

It is a junction number, because it is equal to n+sod(n) for n = 120124195 and 120124204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120124223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21107 + ... + 26186.

It is an arithmetic number, because the mean of its divisors is an integer number (10593856).

Almost surely, 2120124220 is an apocalyptic number.

120124220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120124220 is an abundant number, since it is smaller than the sum of its proper divisors (134128324).

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

120124220 is a wasteful number, since it uses less digits than its factorization.

120124220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47429 (or 47427 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 120124220 is about 10960.1195248957. The cubic root of 120124220 is about 493.4125522082.

Adding to 120124220 its reverse (22421021), we get a palindrome (142545241).

The spelling of 120124220 in words is "one hundred twenty million, one hundred twenty-four thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 127 254 508 635 1270 2540 47293 94586 189172 236465 472930 945860 6006211 12012422 24024844 30031055 60062110 120124220