40642707 has 24 divisors (see below), whose sum is σ = 63489792. Its totient is φ = 23058000.

The previous prime is 40642663. The next prime is 40642711. The reversal of 40642707 is 70724604.

It is not a de Polignac number, because 40642707 - 2⁷ = 40642579 is a prime.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40642757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21282 + ... + 23112.

It is an arithmetic number, because the mean of its divisors is an integer number (2645408).

Almost surely, 2^40642707 is an apocalyptic number.

40642707 is a deficient number, since it is larger than the sum of its proper divisors (22847085).

40642707 is a wasteful number, since it uses less digits than its factorization.

40642707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999 (or 1992 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 40642707 is about 6375.1632920263. The cubic root of 40642707 is about 343.8171548357.

The spelling of 40642707 in words is "forty million, six hundred forty-two thousand, seven hundred seven".