42989924 has 12 divisors (see below), whose sum is σ = 75474924. Its totient is φ = 21425664.

The previous prime is 42989917. The next prime is 42989929. The reversal of 42989924 is 42998924.

It can be written as a sum of positive squares in 2 ways, for example, as 6604900 + 36385024 = 2570^2 + 6032^2 .

It is not an unprimeable number, because it can be changed into a prime (42989929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15917 + ... + 18420.

It is an arithmetic number, because the mean of its divisors is an integer number (6289577).

Almost surely, 2^42989924 is an apocalyptic number.

It is an amenable number.

42989924 is a deficient number, since it is larger than the sum of its proper divisors (32485000).

42989924 is a wasteful number, since it uses less digits than its factorization.

42989924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34654 (or 34652 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 42989924 is about 6556.6701914920. The cubic root of 42989924 is about 350.3124393747.

The spelling of 42989924 in words is "forty-two million, nine hundred eighty-nine thousand, nine hundred twenty-four".