42440738 has 16 divisors (see below), whose sum is σ = 68065920. Its totient is φ = 19776576.

The previous prime is 42440719. The next prime is 42440743. The reversal of 42440738 is 83704424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2558 + ... + 9561.

It is an arithmetic number, because the mean of its divisors is an integer number (4254120).

Almost surely, 2^42440738 is an apocalyptic number.

42440738 is a deficient number, since it is larger than the sum of its proper divisors (25625182).

42440738 is a wasteful number, since it uses less digits than its factorization.

42440738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12241.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 42440738 is about 6514.6556317276. The cubic root of 42440738 is about 348.8143225696.

The spelling of 42440738 in words is "forty-two million, four hundred forty thousand, seven hundred thirty-eight".