712442421 has 24 divisors (see below), whose sum is σ = 1041017120. Its totient is φ = 469476000.

The previous prime is 712442389. The next prime is 712442453. The reversal of 712442421 is 124244217.

It is an interprime number because it is at equal distance from previous prime (712442389) and next prime (712442453).

It is not a de Polignac number, because 712442421 - 2⁵ = 712442389 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 (712449421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 677346 + ... + 678396.

Almost surely, 2^712442421 is an apocalyptic number.

It is an amenable number.

712442421 is a deficient number, since it is larger than the sum of its proper divisors (328574699).

712442421 is a wasteful number, since it uses less digits than its factorization.

712442421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857 (or 1854 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 712442421 is about 26691.6170547983. The cubic root of 712442421 is about 893.1339337233.

Adding to 712442421 its reverse (124244217), we get a palindrome (836686638).

The spelling of 712442421 in words is "seven hundred twelve million, four hundred forty-two thousand, four hundred twenty-one".