156471642 has 32 divisors (see below), whose sum is σ = 348321600. Its totient is φ = 52066224.

The previous prime is 156471641. The next prime is 156471647. The reversal of 156471642 is 246174651.

156471642 is a `hidden beast` number, since 1 + 5 + 6 + 4 + 7 + 1 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 156471597 and 156471606.

It is not an unprimeable number, because it can be changed into a prime (156471641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33388 + ... + 37784.

It is an arithmetic number, because the mean of its divisors is an integer number (10885050).

Almost surely, 2^156471642 is an apocalyptic number.

156471642 is an abundant number, since it is smaller than the sum of its proper divisors (191849958).

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

156471642 is a wasteful number, since it uses less digits than its factorization.

156471642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5067 (or 5061 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 156471642 is about 12508.8625382167. The cubic root of 156471642 is about 538.8632258977.

The spelling of 156471642 in words is "one hundred fifty-six million, four hundred seventy-one thousand, six hundred forty-two".