42637930 has 32 divisors (see below), whose sum is σ = 79398144. Its totient is φ = 16476096.

The previous prime is 42637891. The next prime is 42637937. The reversal of 42637930 is 3973624.

It is not an unprimeable number, because it can be changed into a prime (42637937) 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, 38464 + ... + 39556.

It is an arithmetic number, because the mean of its divisors is an integer number (2481192).

Almost surely, 2^42637930 is an apocalyptic number.

42637930 is a deficient number, since it is larger than the sum of its proper divisors (36760214).

42637930 is a wasteful number, since it uses less digits than its factorization.

42637930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 42637930 is about 6529.7725840951. The cubic root of 42637930 is about 349.3537189299.

It can be divided in two parts, 426379 and 30, that added together give a square (426409 = 653²).

The spelling of 42637930 in words is "forty-two million, six hundred thirty-seven thousand, nine hundred thirty".