426424637 has 2 divisors, whose sum is σ = 426424638. Its totient is φ = 426424636.

The previous prime is 426424601. The next prime is 426424643. The reversal of 426424637 is 736424624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279190681 + 147233956 = 16709^2 + 12134^2 .

It is a cyclic number.

It is not a de Polignac number, because 426424637 - 2²⁶ = 359315773 is a prime.

It is a Chen prime.

It is equal to p_22668266 and since 426424637 and 22668266 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 426424637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426424237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213212318 + 213212319.

It is an arithmetic number, because the mean of its divisors is an integer number (213212319).

Almost surely, 2^426424637 is an apocalyptic number.

It is an amenable number.

426424637 is a deficient number, since it is larger than the sum of its proper divisors (1).

426424637 is an equidigital number, since it uses as much as digits as its factorization.

426424637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 38.

The square root of 426424637 is about 20650.0517432766. The cubic root of 426424637 is about 752.6864470324.

The spelling of 426424637 in words is "four hundred twenty-six million, four hundred twenty-four thousand, six hundred thirty-seven".