40660642 has 32 divisors (see below), whose sum is σ = 70170624. Its totient is φ = 17490000.

The previous prime is 40660637. The next prime is 40660657. The reversal of 40660642 is 24606604.

40660642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 40660642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53767 + ... + 54517.

It is an arithmetic number, because the mean of its divisors is an integer number (2192832).

Almost surely, 2^40660642 is an apocalyptic number.

40660642 is a deficient number, since it is larger than the sum of its proper divisors (29509982).

40660642 is a wasteful number, since it uses less digits than its factorization.

40660642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40660642 is about 6376.5697675161. The cubic root of 40660642 is about 343.8677211350.

The spelling of 40660642 in words is "forty million, six hundred sixty thousand, six hundred forty-two".