40642357 has 32 divisors (see below), whose sum is σ = 51093504. Its totient is φ = 31574400.

The previous prime is 40642339. The next prime is 40642363. The reversal of 40642357 is 75324604.

40642357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40642357 - 2⁷ = 40642229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40642337) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 310182 + ... + 310312.

It is an arithmetic number, because the mean of its divisors is an integer number (1596672).

Almost surely, 2^40642357 is an apocalyptic number.

40642357 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

40642357 is a deficient number, since it is larger than the sum of its proper divisors (10451147).

40642357 is a wasteful number, since it uses less digits than its factorization.

40642357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 40642357 is about 6375.1358416900. The cubic root of 40642357 is about 343.8161678907.

The spelling of 40642357 in words is "forty million, six hundred forty-two thousand, three hundred fifty-seven".