421328040719 has 2 divisors, whose sum is σ = 421328040720. Its totient is φ = 421328040718.

The previous prime is 421328040709. The next prime is 421328040767. The reversal of 421328040719 is 917040823124.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421328040719 is a prime.

It is a super-2 number, since 2×421328040719² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421328040709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210664020359 + 210664020360.

It is an arithmetic number, because the mean of its divisors is an integer number (210664020360).

Almost surely, 2^421328040719 is an apocalyptic number.

421328040719 is a deficient number, since it is larger than the sum of its proper divisors (1).

421328040719 is an equidigital number, since it uses as much as digits as its factorization.

421328040719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 41.

The spelling of 421328040719 in words is "four hundred twenty-one billion, three hundred twenty-eight million, forty thousand, seven hundred nineteen".