420915479219 has 2 divisors, whose sum is σ = 420915479220. Its totient is φ = 420915479218.

The previous prime is 420915479203. The next prime is 420915479249. The reversal of 420915479219 is 912974519024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420915479219 - 2⁴ = 420915479203 is a prime.

It is a super-2 number, since 2×420915479219² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420915479249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210457739609 + 210457739610.

It is an arithmetic number, because the mean of its divisors is an integer number (210457739610).

Almost surely, 2^420915479219 is an apocalyptic number.

420915479219 is a deficient number, since it is larger than the sum of its proper divisors (1).

420915479219 is an equidigital number, since it uses as much as digits as its factorization.

420915479219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 420915479219 in words is "four hundred twenty billion, nine hundred fifteen million, four hundred seventy-nine thousand, two hundred nineteen".