421504012519 has 2 divisors, whose sum is σ = 421504012520. Its totient is φ = 421504012518.

The previous prime is 421504012507. The next prime is 421504012609. The reversal of 421504012519 is 915210405124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421504012519 - 2¹⁵ = 421503979751 is a prime.

It is a super-2 number, since 2×421504012519² (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 (421504012819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210752006259 + 210752006260.

It is an arithmetic number, because the mean of its divisors is an integer number (210752006260).

Almost surely, 2^421504012519 is an apocalyptic number.

421504012519 is a deficient number, since it is larger than the sum of its proper divisors (1).

421504012519 is an equidigital number, since it uses as much as digits as its factorization.

421504012519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 34.

The spelling of 421504012519 in words is "four hundred twenty-one billion, five hundred four million, twelve thousand, five hundred nineteen".