42940544 has 16 divisors (see below), whose sum is σ = 85545870. Its totient is φ = 21470208.

The previous prime is 42940537. The next prime is 42940567. The reversal of 42940544 is 44504924.

It can be written as a sum of positive squares in only one way, i.e., 42094144 + 846400 = 6488^2 + 920^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 42940544.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167609 + ... + 167864.

Almost surely, 2^42940544 is an apocalyptic number.

It is an amenable number.

42940544 is a deficient number, since it is larger than the sum of its proper divisors (42605326).

42940544 is an equidigital number, since it uses as much as digits as its factorization.

42940544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335487 (or 335475 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 42940544 is about 6552.9034786116. The cubic root of 42940544 is about 350.1782602144.

The spelling of 42940544 in words is "forty-two million, nine hundred forty thousand, five hundred forty-four".