42393908 has 12 divisors (see below), whose sum is σ = 74455332. Its totient is φ = 21120960.

The previous prime is 42393907. The next prime is 42393913. The reversal of 42393908 is 80939324.

It can be written as a sum of positive squares in 2 ways, for example, as 37429924 + 4963984 = 6118^2 + 2228^2 .

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 (42393907) 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, 17735 + ... + 19982.

It is an arithmetic number, because the mean of its divisors is an integer number (6204611).

Almost surely, 2^42393908 is an apocalyptic number.

It is an amenable number.

42393908 is a deficient number, since it is larger than the sum of its proper divisors (32061424).

42393908 is a wasteful number, since it uses less digits than its factorization.

42393908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38002 (or 38000 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 42393908 is about 6511.0604359044. The cubic root of 42393908 is about 348.6859790072.

The spelling of 42393908 in words is "forty-two million, three hundred ninety-three thousand, nine hundred eight".