100120156 has 24 divisors (see below), whose sum is σ = 177818256. Its totient is φ = 49320960.

The previous prime is 100120091. The next prime is 100120159. The reversal of 100120156 is 651021001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100120159) 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, 81660 + ... + 82876.

It is an arithmetic number, because the mean of its divisors is an integer number (7409094).

Almost surely, 2^100120156 is an apocalyptic number.

It is an amenable number.

100120156 is a deficient number, since it is larger than the sum of its proper divisors (77698100).

100120156 is a wasteful number, since it uses less digits than its factorization.

100120156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 100120156 is about 10006.0059964004. The cubic root of 100120156 is about 464.3447138683.

Adding to 100120156 its reverse (651021001), we get a palindrome (751141157).

The spelling of 100120156 in words is "one hundred million, one hundred twenty thousand, one hundred fifty-six".