900042400 has 36 divisors (see below), whose sum is σ = 2197230462. Its totient is φ = 360016640.

The previous prime is 900042391. The next prime is 900042421. The reversal of 900042400 is 4240009.

It can be written as a sum of positive squares in 3 ways, for example, as 700555024 + 199487376 = 26468^2 + 14124^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 561727 + ... + 563326.

Almost surely, 2^900042400 is an apocalyptic number.

It is an amenable number.

900042400 is an abundant number, since it is smaller than the sum of its proper divisors (1297188062).

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

900042400 is a wasteful number, since it uses less digits than its factorization.

900042400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125073 (or 1125060 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 900042400 is about 30000.7066583439. The cubic root of 900042400 is about 965.5045461268.

Adding to 900042400 its reverse (4240009), we get a palindrome (904282409).

The spelling of 900042400 in words is "nine hundred million, forty-two thousand, four hundred".