812120934 has 16 divisors (see below), whose sum is σ = 1626143040. Its totient is φ = 270390120.

The previous prime is 812120929. The next prime is 812120941. The reversal of 812120934 is 439021218.

It is a super-2 number, since 2×812120934² = 1319080822882064712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73632 + ... + 83939.

It is an arithmetic number, because the mean of its divisors is an integer number (101633940).

Almost surely, 2^812120934 is an apocalyptic number.

812120934 is an abundant number, since it is smaller than the sum of its proper divisors (814022106).

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

812120934 is a wasteful number, since it uses less digits than its factorization.

812120934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158435.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 812120934 is about 28497.7355942538. The cubic root of 812120934 is about 932.9826519568.

The spelling of 812120934 in words is "eight hundred twelve million, one hundred twenty thousand, nine hundred thirty-four".