156120100 has 36 divisors (see below), whose sum is σ = 346668784. Its totient is φ = 60994080.

The previous prime is 156120091. The next prime is 156120101. The reversal of 156120100 is 1021651.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (156120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13854 + ... + 22453.

Almost surely, 2^156120100 is an apocalyptic number.

156120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156120100 is an abundant number, since it is smaller than the sum of its proper divisors (190548684).

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

156120100 is a wasteful number, since it uses less digits than its factorization.

156120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36364 (or 36357 counting only the distinct ones).

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

The square root of 156120100 is about 12494.8029196142. The cubic root of 156120100 is about 538.4593718908.

Adding to 156120100 its reverse (1021651), we get a palindrome (157141751).

The spelling of 156120100 in words is "one hundred fifty-six million, one hundred twenty thousand, one hundred".