912421013 has 6 divisors (see below), whose sum is σ = 1061387766. Its totient is φ = 782075112.

The previous prime is 912420967. The next prime is 912421051. The reversal of 912421013 is 310124219.

It can be written as a sum of positive squares in only one way, i.e., 870132004 + 42289009 = 29498^2 + 6503^2 .

It is not a de Polignac number, because 912421013 - 2⁸ = 912420757 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 912421013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912420013) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9310370 + ... + 9310467.

It is an arithmetic number, because the mean of its divisors is an integer number (176897961).

Almost surely, 2^912421013 is an apocalyptic number.

It is an amenable number.

912421013 is a deficient number, since it is larger than the sum of its proper divisors (148966753).

912421013 is a wasteful number, since it uses less digits than its factorization.

912421013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18620851 (or 18620844 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 912421013 is about 30206.3075035662. The cubic root of 912421013 is about 969.9107201635.

The spelling of 912421013 in words is "nine hundred twelve million, four hundred twenty-one thousand, thirteen".