42647924 has 12 divisors (see below), whose sum is σ = 81418848. Its totient is φ = 19385400.

The previous prime is 42647923. The next prime is 42647929. The reversal of 42647924 is 42974624.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42647921) 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 3 ways as a sum of consecutive naturals, for example, 484592 + ... + 484679.

It is an arithmetic number, because the mean of its divisors is an integer number (6784904).

Almost surely, 2^42647924 is an apocalyptic number.

42647924 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42647924 is a deficient number, since it is larger than the sum of its proper divisors (38770924).

42647924 is a wasteful number, since it uses less digits than its factorization.

42647924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969286 (or 969284 counting only the distinct ones).

The product of its digits is 96768, while the sum is 38.

The square root of 42647924 is about 6530.5378032747. The cubic root of 42647924 is about 349.3810120647.

The spelling of 42647924 in words is "forty-two million, six hundred forty-seven thousand, nine hundred twenty-four".