812423452 has 6 divisors (see below), whose sum is σ = 1421741048. Its totient is φ = 406211724.

The previous prime is 812423449. The next prime is 812423453. The reversal of 812423452 is 254324218.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812423453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101552928 + ... + 101552935.

Almost surely, 2^812423452 is an apocalyptic number.

It is an amenable number.

812423452 is a deficient number, since it is larger than the sum of its proper divisors (609317596).

812423452 is a wasteful number, since it uses less digits than its factorization.

812423452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203105867 (or 203105865 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 812423452 is about 28503.0428551058. The cubic root of 812423452 is about 933.0984840518.

The spelling of 812423452 in words is "eight hundred twelve million, four hundred twenty-three thousand, four hundred fifty-two".