42747732 has 36 divisors (see below), whose sum is σ = 108553536. Its totient is φ = 14183760.

The previous prime is 42747713. The next prime is 42747743. The reversal of 42747732 is 23774724.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×42747732² = 3654737182287648, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5557 + ... + 10787.

It is an arithmetic number, because the mean of its divisors is an integer number (3015376).

Almost surely, 2^42747732 is an apocalyptic number.

It is an amenable number.

42747732 is an abundant number, since it is smaller than the sum of its proper divisors (65805804).

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

42747732 is a wasteful number, since it uses less digits than its factorization.

42747732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5468 (or 5463 counting only the distinct ones).

The product of its digits is 65856, while the sum is 36.

The square root of 42747732 is about 6538.1749747158. The cubic root of 42747732 is about 349.6533492969.

The spelling of 42747732 in words is "forty-two million, seven hundred forty-seven thousand, seven hundred thirty-two".