426405437 has 2 divisors, whose sum is σ = 426405438. Its totient is φ = 426405436.

The previous prime is 426405409. The next prime is 426405451. The reversal of 426405437 is 734504624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391287961 + 35117476 = 19781^2 + 5926^2 .

It is a cyclic number.

It is not a de Polignac number, because 426405437 - 2⁸ = 426405181 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 426405397 and 426405406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (426405737) 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, 213202718 + 213202719.

It is an arithmetic number, because the mean of its divisors is an integer number (213202719).

Almost surely, 2^426405437 is an apocalyptic number.

It is an amenable number.

426405437 is a deficient number, since it is larger than the sum of its proper divisors (1).

426405437 is an equidigital number, since it uses as much as digits as its factorization.

426405437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 35.

The square root of 426405437 is about 20649.5868481672. The cubic root of 426405437 is about 752.6751501580.

The spelling of 426405437 in words is "four hundred twenty-six million, four hundred five thousand, four hundred thirty-seven".