712866442 has 4 divisors (see below), whose sum is σ = 1069299666. Its totient is φ = 356433220.

The previous prime is 712866419. The next prime is 712866443. The reversal of 712866442 is 244668217.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244668217 = 139 ⋅1760203.

It can be written as a sum of positive squares in only one way, i.e., 427290241 + 285576201 = 20671^2 + 16899^2 .

It is a junction number, because it is equal to n+sod(n) for n = 712866395 and 712866404.

It is not an unprimeable number, because it can be changed into a prime (712866443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178216609 + ... + 178216612.

Almost surely, 2^712866442 is an apocalyptic number.

712866442 is a deficient number, since it is larger than the sum of its proper divisors (356433224).

712866442 is a wasteful number, since it uses less digits than its factorization.

712866442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356433223.

The product of its digits is 129024, while the sum is 40.

The square root of 712866442 is about 26699.5588353066. The cubic root of 712866442 is about 893.3110860218.

The spelling of 712866442 in words is "seven hundred twelve million, eight hundred sixty-six thousand, four hundred forty-two".