40642406 has 16 divisors (see below), whose sum is σ = 73340160. Its totient is φ = 16501320.

The previous prime is 40642397. The next prime is 40642411. The reversal of 40642406 is 60424604.

40642406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 76130 + ... + 76661.

It is an arithmetic number, because the mean of its divisors is an integer number (4583760).

Almost surely, 2^40642406 is an apocalyptic number.

40642406 is a deficient number, since it is larger than the sum of its proper divisors (32697754).

40642406 is a wasteful number, since it uses less digits than its factorization.

40642406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152819.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 40642406 is about 6375.1396847442. The cubic root of 40642406 is about 343.8163060634.

The spelling of 40642406 in words is "forty million, six hundred forty-two thousand, four hundred six".