912423421 has 16 divisors (see below), whose sum is σ = 1141399168. Its totient is φ = 710078400.

The previous prime is 912423397. The next prime is 912423431. The reversal of 912423421 is 124324219.

It is a cyclic number.

It is not a de Polignac number, because 912423421 - 2⁹ = 912422909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 912423421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912423431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76635 + ... + 87736.

It is an arithmetic number, because the mean of its divisors is an integer number (71337448).

Almost surely, 2^912423421 is an apocalyptic number.

912423421 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

912423421 is a deficient number, since it is larger than the sum of its proper divisors (228975747).

912423421 is a wasteful number, since it uses less digits than its factorization.

912423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164452.

The product of its digits is 3456, while the sum is 28.

The square root of 912423421 is about 30206.3473627647. The cubic root of 912423421 is about 969.9115734037.

The spelling of 912423421 in words is "nine hundred twelve million, four hundred twenty-three thousand, four hundred twenty-one".