420130637 has 2 divisors, whose sum is σ = 420130638. Its totient is φ = 420130636.

The previous prime is 420130621. The next prime is 420130661. The reversal of 420130637 is 736031024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222278281 + 197852356 = 14909^2 + 14066^2 .

It is a cyclic number.

It is not a de Polignac number, because 420130637 - 2⁴ = 420130621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420130037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210065318 + 210065319.

It is an arithmetic number, because the mean of its divisors is an integer number (210065319).

Almost surely, 2^420130637 is an apocalyptic number.

It is an amenable number.

420130637 is a deficient number, since it is larger than the sum of its proper divisors (1).

420130637 is an equidigital number, since it uses as much as digits as its factorization.

420130637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 420130637 is about 20497.0885005651. The cubic root of 420130637 is about 748.9648754208.

The spelling of 420130637 in words is "four hundred twenty million, one hundred thirty thousand, six hundred thirty-seven".