712542021 has 8 divisors (see below), whose sum is σ = 952202400. Its totient is φ = 473954832.

The previous prime is 712542011. The next prime is 712542031. The reversal of 712542021 is 120245217.

It is an interprime number because it is at equal distance from previous prime (712542011) and next prime (712542031).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 712542021 - 2¹¹ = 712539973 is a prime.

It is a super-2 number, since 2×712542021² = 1015432263381528882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 712541982 and 712542000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (712542011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266746 + ... + 269403.

It is an arithmetic number, because the mean of its divisors is an integer number (119025300).

Almost surely, 2^712542021 is an apocalyptic number.

It is an amenable number.

712542021 is a deficient number, since it is larger than the sum of its proper divisors (239660379).

712542021 is a wasteful number, since it uses less digits than its factorization.

712542021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536595.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 712542021 is about 26693.4827439208. The cubic root of 712542021 is about 893.1755520548.

Adding to 712542021 its reverse (120245217), we get a palindrome (832787238).

The spelling of 712542021 in words is "seven hundred twelve million, five hundred forty-two thousand, twenty-one".