423504019 has 2 divisors, whose sum is σ = 423504020. Its totient is φ = 423504018.

The previous prime is 423504007. The next prime is 423504061. The reversal of 423504019 is 910405324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423504019 - 2⁵ = 423503987 is a prime.

It is a super-2 number, since 2×423504019² = 358711308218304722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (423504089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211752009 + 211752010.

It is an arithmetic number, because the mean of its divisors is an integer number (211752010).

Almost surely, 2^423504019 is an apocalyptic number.

423504019 is a deficient number, since it is larger than the sum of its proper divisors (1).

423504019 is an equidigital number, since it uses as much as digits as its factorization.

423504019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 423504019 is about 20579.2132745642. The cubic root of 423504019 is about 750.9641047310.

The spelling of 423504019 in words is "four hundred twenty-three million, five hundred four thousand, nineteen".