426121613 has 2 divisors, whose sum is σ = 426121614. Its totient is φ = 426121612.

The previous prime is 426121601. The next prime is 426121627. The reversal of 426121613 is 316121624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 390576169 + 35545444 = 19763^2 + 5962^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426121613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426127613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213060806 + 213060807.

It is an arithmetic number, because the mean of its divisors is an integer number (213060807).

Almost surely, 2^426121613 is an apocalyptic number.

It is an amenable number.

426121613 is a deficient number, since it is larger than the sum of its proper divisors (1).

426121613 is an equidigital number, since it uses as much as digits as its factorization.

426121613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 426121613 is about 20642.7133148722. The cubic root of 426121613 is about 752.5081145396.

The spelling of 426121613 in words is "four hundred twenty-six million, one hundred twenty-one thousand, six hundred thirteen".