156542472 has 48 divisors (see below), whose sum is σ = 425393280. Its totient is φ = 52005600.

The previous prime is 156542471. The next prime is 156542473. The reversal of 156542472 is 274245651.

It is a happy number.

156542472 is a `hidden beast` number, since 1 + 565 + 4 + 24 + 72 = 666.

It is an interprime number because it is at equal distance from previous prime (156542471) and next prime (156542473).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (156542471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18897 + ... + 25887.

It is an arithmetic number, because the mean of its divisors is an integer number (8862360).

Almost surely, 2^156542472 is an apocalyptic number.

156542472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

156542472 is an abundant number, since it is smaller than the sum of its proper divisors (268850808).

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

156542472 is a wasteful number, since it uses less digits than its factorization.

156542472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7314 (or 7307 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 156542472 is about 12511.6934105660. The cubic root of 156542472 is about 538.9445226834.

The spelling of 156542472 in words is "one hundred fifty-six million, five hundred forty-two thousand, four hundred seventy-two".