40642558 has 16 divisors (see below), whose sum is σ = 70007040. Its totient is φ = 17501400.

The previous prime is 40642549. The next prime is 40642571. The reversal of 40642558 is 85524604.

It is a congruent number.

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, 48198 + ... + 49033.

It is an arithmetic number, because the mean of its divisors is an integer number (4375440).

Almost surely, 2^40642558 is an apocalyptic number.

40642558 is a deficient number, since it is larger than the sum of its proper divisors (29364482).

40642558 is a wasteful number, since it uses less digits than its factorization.

40642558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97263.

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 40642558 is about 6375.1516060404. The cubic root of 40642558 is about 343.8167346798.

The spelling of 40642558 in words is "forty million, six hundred forty-two thousand, five hundred fifty-eight".