42972132 has 24 divisors (see below), whose sum is σ = 114592576. Its totient is φ = 12277728.

The previous prime is 42972131. The next prime is 42972151. The reversal of 42972132 is 23127924.

It is a self number, because there is not a number n which added to its sum of digits gives 42972132.

It is not an unprimeable number, because it can be changed into a prime (42972131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255703 + ... + 255870.

Almost surely, 2^42972132 is an apocalyptic number.

42972132 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

42972132 is an abundant number, since it is smaller than the sum of its proper divisors (71620444).

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

42972132 is a wasteful number, since it uses less digits than its factorization.

42972132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511587 (or 511585 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 42972132 is about 6555.3132648257. The cubic root of 42972132 is about 350.2641054213.

The spelling of 42972132 in words is "forty-two million, nine hundred seventy-two thousand, one hundred thirty-two".