42522745 has 16 divisors (see below), whose sum is σ = 53654400. Its totient is φ = 32289664.

The previous prime is 42522737. The next prime is 42522749. The reversal of 42522745 is 54722524.

It is a cyclic number.

It is not a de Polignac number, because 42522745 - 2³ = 42522737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42522749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14406 + ... + 17104.

It is an arithmetic number, because the mean of its divisors is an integer number (3353400).

Almost surely, 2^42522745 is an apocalyptic number.

It is an amenable number.

42522745 is a deficient number, since it is larger than the sum of its proper divisors (11131655).

42522745 is a wasteful number, since it uses less digits than its factorization.

42522745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864.

The product of its digits is 22400, while the sum is 31.

The square root of 42522745 is about 6520.9466337335. The cubic root of 42522745 is about 349.0388459318.

The spelling of 42522745 in words is "forty-two million, five hundred twenty-two thousand, seven hundred forty-five".