420972719 has 2 divisors, whose sum is σ = 420972720. Its totient is φ = 420972718.

The previous prime is 420972701. The next prime is 420972733. The reversal of 420972719 is 917279024.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420972719 - 2⁸ = 420972463 is a prime.

It is a super-3 number, since 3×420972719³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420972779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210486359 + 210486360.

It is an arithmetic number, because the mean of its divisors is an integer number (210486360).

Almost surely, 2^420972719 is an apocalyptic number.

420972719 is a deficient number, since it is larger than the sum of its proper divisors (1).

420972719 is an equidigital number, since it uses as much as digits as its factorization.

420972719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 420972719 is about 20517.6197206206. The cubic root of 420972719 is about 749.4649333253.

The spelling of 420972719 in words is "four hundred twenty million, nine hundred seventy-two thousand, seven hundred nineteen".