156440120 has 32 divisors (see below), whose sum is σ = 372697200. Its totient is φ = 58894848.

The previous prime is 156440117. The next prime is 156440147. The reversal of 156440120 is 21044651.

It is a super-2 number, since 2×156440120² = 48947022291228800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114350 + ... + 115709.

Almost surely, 2^156440120 is an apocalyptic number.

156440120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156440120 is an abundant number, since it is smaller than the sum of its proper divisors (216257080).

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

156440120 is a wasteful number, since it uses less digits than its factorization.

156440120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230087 (or 230083 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 156440120 is about 12507.6024880870. The cubic root of 156440120 is about 538.8270378976.

Adding to 156440120 its reverse (21044651), we get a palindrome (177484771).

The spelling of 156440120 in words is "one hundred fifty-six million, four hundred forty thousand, one hundred twenty".