812715142 has 16 divisors (see below), whose sum is σ = 1228270032. Its totient is φ = 403303680.

The previous prime is 812715133. The next prime is 812715173. The reversal of 812715142 is 241517218.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 148173 + ... + 153559.

It is an arithmetic number, because the mean of its divisors is an integer number (76766877).

Almost surely, 2^812715142 is an apocalyptic number.

812715142 is a deficient number, since it is larger than the sum of its proper divisors (415554890).

812715142 is a wasteful number, since it uses less digits than its factorization.

812715142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5943.

The product of its digits is 4480, while the sum is 31.

The square root of 812715142 is about 28508.1592180204. The cubic root of 812715142 is about 933.2101429529.

The spelling of 812715142 in words is "eight hundred twelve million, seven hundred fifteen thousand, one hundred forty-two".