420615323 has 2 divisors, whose sum is σ = 420615324. Its totient is φ = 420615322.

The previous prime is 420615311. The next prime is 420615401. The reversal of 420615323 is 323516024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420615323 - 2⁸ = 420615067 is a prime.

It is equal to p_22375502 and since 420615323 and 22375502 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 420615292 and 420615301.

It is not a weakly prime, because it can be changed into another prime (420615523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210307661 + 210307662.

It is an arithmetic number, because the mean of its divisors is an integer number (210307662).

Almost surely, 2^420615323 is an apocalyptic number.

420615323 is a deficient number, since it is larger than the sum of its proper divisors (1).

420615323 is an equidigital number, since it uses as much as digits as its factorization.

420615323 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 26.

The square root of 420615323 is about 20508.9083814814. The cubic root of 420615323 is about 749.2527805387.

The spelling of 420615323 in words is "four hundred twenty million, six hundred fifteen thousand, three hundred twenty-three".