842740900 has 27 divisors (see below), whose sum is σ = 1829377921. Its totient is φ = 336980240.

The previous prime is 842740883. The next prime is 842740939. The reversal of 842740900 is 9047248.

It is a happy number.

The square root of 842740900 is 29030.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 303386724 + 539354176 = 17418^2 + 23224^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 288849 + ... + 291751.

Almost surely, 2^842740900 is an apocalyptic number.

842740900 is the 29030-th square number.

It is an amenable number.

842740900 is an abundant number, since it is smaller than the sum of its proper divisors (986637021).

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

842740900 is an equidigital number, since it uses as much as digits as its factorization.

842740900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5820 (or 2910 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The cubic root of 842740900 is about 944.5639300833.

The spelling of 842740900 in words is "eight hundred forty-two million, seven hundred forty thousand, nine hundred".