812544742 has 16 divisors (see below), whose sum is σ = 1245634560. Its totient is φ = 397345608.

The previous prime is 812544739. The next prime is 812544757. The reversal of 812544742 is 247445218.

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, 202843 + ... + 206809.

It is an arithmetic number, because the mean of its divisors is an integer number (77852160).

Almost surely, 2^812544742 is an apocalyptic number.

812544742 is a deficient number, since it is larger than the sum of its proper divisors (433089818).

812544742 is a wasteful number, since it uses less digits than its factorization.

812544742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6195.

The product of its digits is 71680, while the sum is 37.

The square root of 812544742 is about 28505.1704432722. The cubic root of 812544742 is about 933.1449170965.

The spelling of 812544742 in words is "eight hundred twelve million, five hundred forty-four thousand, seven hundred forty-two".