426013921 has 2 divisors, whose sum is σ = 426013922. Its totient is φ = 426013920.

The previous prime is 426013901. The next prime is 426013933. The reversal of 426013921 is 129310624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 393466896 + 32547025 = 19836^2 + 5705^2 .

It is a cyclic number.

It is not a de Polignac number, because 426013921 - 2⁷ = 426013793 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426013921.

It is not a weakly prime, because it can be changed into another prime (426013901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213006960 + 213006961.

It is an arithmetic number, because the mean of its divisors is an integer number (213006961).

Almost surely, 2^426013921 is an apocalyptic number.

It is an amenable number.

426013921 is a deficient number, since it is larger than the sum of its proper divisors (1).

426013921 is an equidigital number, since it uses as much as digits as its factorization.

426013921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 426013921 is about 20640.1046751222. The cubic root of 426013921 is about 752.4447164163. Note that the first 3 decimals are identical.

It can be divided in two parts, 4260 and 13921, that added together give a palindrome (18181).

The spelling of 426013921 in words is "four hundred twenty-six million, thirteen thousand, nine hundred twenty-one".