40642424 has 16 divisors (see below), whose sum is σ = 76452720. Its totient is φ = 20255040.

The previous prime is 40642421. The next prime is 40642447. The reversal of 40642424 is 42424604.

40642424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 40642393 and 40642402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40642421) 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 3 ways as a sum of consecutive naturals, for example, 5612 + ... + 10619.

It is an arithmetic number, because the mean of its divisors is an integer number (4778295).

Almost surely, 2^40642424 is an apocalyptic number.

It is an amenable number.

40642424 is a deficient number, since it is larger than the sum of its proper divisors (35810296).

40642424 is a wasteful number, since it uses less digits than its factorization.

40642424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16550 (or 16546 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 40642424 is about 6375.1410964778. The cubic root of 40642424 is about 343.8163568206.

The spelling of 40642424 in words is "forty million, six hundred forty-two thousand, four hundred twenty-four".