712294021 has 4 divisors (see below), whose sum is σ = 749783200. Its totient is φ = 674804844.

The previous prime is 712293997. The next prime is 712294087. The reversal of 712294021 is 120492217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 712294021 - 2⁷ = 712293893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712294421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18744561 + ... + 18744598.

It is an arithmetic number, because the mean of its divisors is an integer number (187445800).

Almost surely, 2^712294021 is an apocalyptic number.

It is an amenable number.

712294021 is a deficient number, since it is larger than the sum of its proper divisors (37489179).

712294021 is a wasteful number, since it uses less digits than its factorization.

712294021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37489178.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 712294021 is about 26688.8370110052. The cubic root of 712294021 is about 893.0719168849.

The spelling of 712294021 in words is "seven hundred twelve million, two hundred ninety-four thousand, twenty-one".