42750732 has 12 divisors (see below), whose sum is σ = 99751736. Its totient is φ = 14250240.

The previous prime is 42750731. The next prime is 42750737. The reversal of 42750732 is 23705724.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 42750732.

It is not an unprimeable number, because it can be changed into a prime (42750731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1781269 + ... + 1781292.

Almost surely, 2^42750732 is an apocalyptic number.

It is an amenable number.

42750732 is an abundant number, since it is smaller than the sum of its proper divisors (57001004).

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

42750732 is a wasteful number, since it uses less digits than its factorization.

42750732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3562568 (or 3562566 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 30.

The square root of 42750732 is about 6538.4043925105. The cubic root of 42750732 is about 349.6615285652.

The spelling of 42750732 in words is "forty-two million, seven hundred fifty thousand, seven hundred thirty-two".