156420135 has 24 divisors (see below), whose sum is σ = 271430640. Its totient is φ = 83331072.

The previous prime is 156420107. The next prime is 156420139. The reversal of 156420135 is 531024651.

156420135 is a `hidden beast` number, since 1 + 5 + 642 + 0 + 13 + 5 = 666.

It is not a de Polignac number, because 156420135 - 2⁶ = 156420071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 156420099 and 156420108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156420139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62172 + ... + 64638.

It is an arithmetic number, because the mean of its divisors is an integer number (11309610).

Almost surely, 2^156420135 is an apocalyptic number.

156420135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

156420135 is a deficient number, since it is larger than the sum of its proper divisors (115010505).

156420135 is a wasteful number, since it uses less digits than its factorization.

156420135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887 (or 3884 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 156420135 is about 12506.8035484691. The cubic root of 156420135 is about 538.8040921279.

Adding to 156420135 its reverse (531024651), we get a palindrome (687444786).

The spelling of 156420135 in words is "one hundred fifty-six million, four hundred twenty thousand, one hundred thirty-five".