156404120 has 32 divisors (see below), whose sum is σ = 353002320. Its totient is φ = 62367360.

The previous prime is 156404119. The next prime is 156404123. The reversal of 156404120 is 21404651.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156404123) 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 7 ways as a sum of consecutive naturals, for example, 7334 + ... + 19146.

Almost surely, 2^156404120 is an apocalyptic number.

156404120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

156404120 is an abundant number, since it is smaller than the sum of its proper divisors (196598200).

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

156404120 is a wasteful number, since it uses less digits than its factorization.

156404120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12155 (or 12151 counting only the distinct ones).

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

The square root of 156404120 is about 12506.1632805589. The cubic root of 156404120 is about 538.7857031013.

Adding to 156404120 its reverse (21404651), we get a palindrome (177808771).

The spelling of 156404120 in words is "one hundred fifty-six million, four hundred four thousand, one hundred twenty".