40721902 has 48 divisors (see below), whose sum is σ = 73917360. Its totient is φ = 16713216.

The previous prime is 40721873. The next prime is 40721917. The reversal of 40721902 is 20912704.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108988 + ... + 109360.

It is an arithmetic number, because the mean of its divisors is an integer number (1539945).

Almost surely, 2^40721902 is an apocalyptic number.

40721902 is a deficient number, since it is larger than the sum of its proper divisors (33195458).

40721902 is a wasteful number, since it uses less digits than its factorization.

40721902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 40721902 is about 6381.3714826830. The cubic root of 40721902 is about 344.0403267578.

The spelling of 40721902 in words is "forty million, seven hundred twenty-one thousand, nine hundred two".