42942940 has 24 divisors (see below), whose sum is σ = 92619072. Its totient is φ = 16712640.

The previous prime is 42942923. The next prime is 42942941. The reversal of 42942940 is 4924924.

42942940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42942896 and 42942905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42942941) 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 7 ways as a sum of consecutive naturals, for example, 28276 + ... + 29755.

It is an arithmetic number, because the mean of its divisors is an integer number (3859128).

Almost surely, 2^42942940 is an apocalyptic number.

It is an amenable number.

42942940 is an abundant number, since it is smaller than the sum of its proper divisors (49676132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42942940 is a wasteful number, since it uses less digits than its factorization.

42942940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58077 (or 58075 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 42942940 is about 6553.0862957846. The cubic root of 42942940 is about 350.1847731850.

The spelling of 42942940 in words is "forty-two million, nine hundred forty-two thousand, nine hundred forty".