900042931 has 8 divisors (see below), whose sum is σ = 919296000. Its totient is φ = 880972680.

The previous prime is 900042929. The next prime is 900042973. The reversal of 900042931 is 139240009.

It is a happy number.

900042931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 900042931 - 2¹ = 900042929 is a prime.

It is a super-2 number, since 2×900042931² = 1620154555286141522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 900042931.

It is not an unprimeable number, because it can be changed into a prime (900042431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35731 + ... + 55468.

It is an arithmetic number, because the mean of its divisors is an integer number (114912000).

Almost surely, 2^900042931 is an apocalyptic number.

900042931 is a deficient number, since it is larger than the sum of its proper divisors (19253069).

900042931 is a wasteful number, since it uses less digits than its factorization.

900042931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91409.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 900042931 is about 30000.7155081341. The cubic root of 900042931 is about 965.5047360003.

The spelling of 900042931 in words is "nine hundred million, forty-two thousand, nine hundred thirty-one".