42740564 has 12 divisors (see below), whose sum is σ = 74971764. Its totient is φ = 21320064.

The previous prime is 42740549. The next prime is 42740591. The reversal of 42740564 is 46504724.

It can be written as a sum of positive squares in 2 ways, for example, as 20178064 + 22562500 = 4492^2 + 4750^2 .

It is a super-2 number, since 2×42740564² = 3653511622076192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42740564.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10607 + ... + 14070.

It is an arithmetic number, because the mean of its divisors is an integer number (6247647).

Almost surely, 2^42740564 is an apocalyptic number.

It is an amenable number.

42740564 is a deficient number, since it is larger than the sum of its proper divisors (32231200).

42740564 is a wasteful number, since it uses less digits than its factorization.

42740564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25114 (or 25112 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 42740564 is about 6537.6267865335. The cubic root of 42740564 is about 349.6338047488.

The spelling of 42740564 in words is "forty-two million, seven hundred forty thousand, five hundred sixty-four".