42745772 has 24 divisors (see below), whose sum is σ = 76746096. Its totient is φ = 20824128.

The previous prime is 42745723. The next prime is 42745777. The reversal of 42745772 is 27754724.

It is not an unprimeable number, because it can be changed into a prime (42745777) 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, 33938 + ... + 35174.

It is an arithmetic number, because the mean of its divisors is an integer number (3197754).

Almost surely, 2^42745772 is an apocalyptic number.

It is an amenable number.

42745772 is a deficient number, since it is larger than the sum of its proper divisors (34000324).

42745772 is a wasteful number, since it uses less digits than its factorization.

42745772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457 (or 1455 counting only the distinct ones).

The product of its digits is 109760, while the sum is 38.

The square root of 42745772 is about 6538.0250840755. The cubic root of 42745772 is about 349.6480053016.

The spelling of 42745772 in words is "forty-two million, seven hundred forty-five thousand, seven hundred seventy-two".