420739601 has 2 divisors, whose sum is σ = 420739602. Its totient is φ = 420739600.

The previous prime is 420739597. The next prime is 420739607. The reversal of 420739601 is 106937024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219780625 + 200958976 = 14825^2 + 14176^2 .

It is a cyclic number.

It is not a de Polignac number, because 420739601 - 2² = 420739597 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (420739607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210369800 + 210369801.

It is an arithmetic number, because the mean of its divisors is an integer number (210369801).

Almost surely, 2^420739601 is an apocalyptic number.

It is an amenable number.

420739601 is a deficient number, since it is larger than the sum of its proper divisors (1).

420739601 is an equidigital number, since it uses as much as digits as its factorization.

420739601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 420739601 is about 20511.9380118018. The cubic root of 420739601 is about 749.3265664603.

The spelling of 420739601 in words is "four hundred twenty million, seven hundred thirty-nine thousand, six hundred one".