42707538 has 12 divisors (see below), whose sum is σ = 92533038. Its totient is φ = 14235840.

The previous prime is 42707531. The next prime is 42707551. The reversal of 42707538 is 83570724.

It can be written as a sum of positive squares in only one way, i.e., 42419169 + 288369 = 6513^2 + 537^2 .

It is not an unprimeable number, because it can be changed into a prime (42707531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1186303 + ... + 1186338.

Almost surely, 2^42707538 is an apocalyptic number.

42707538 is an abundant number, since it is smaller than the sum of its proper divisors (49825500).

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

42707538 is a wasteful number, since it uses less digits than its factorization.

42707538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2372649 (or 2372646 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 42707538 is about 6535.1004582944. The cubic root of 42707538 is about 349.5437265313.

The spelling of 42707538 in words is "forty-two million, seven hundred seven thousand, five hundred thirty-eight".