420333919 has 2 divisors, whose sum is σ = 420333920. Its totient is φ = 420333918.

The previous prime is 420333913. The next prime is 420333961. The reversal of 420333919 is 919333024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420333919 - 2³ = 420333911 is a prime.

It is a super-2 number, since 2×420333919² = 353361206923797122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420333911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210166959 + 210166960.

It is an arithmetic number, because the mean of its divisors is an integer number (210166960).

Almost surely, 2^420333919 is an apocalyptic number.

420333919 is a deficient number, since it is larger than the sum of its proper divisors (1).

420333919 is an equidigital number, since it uses as much as digits as its factorization.

420333919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 420333919 is about 20502.0467027075. The cubic root of 420333919 is about 749.0856525595.

The spelling of 420333919 in words is "four hundred twenty million, three hundred thirty-three thousand, nine hundred nineteen".