420039019 has 2 divisors, whose sum is σ = 420039020. Its totient is φ = 420039018.

The previous prime is 420038981. The next prime is 420039029. The reversal of 420039019 is 910930024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 420039019 - 2¹³ = 420030827 is a prime.

It is a super-2 number, since 2×420039019² = 352865554964964722, which contains 22 as substring.

It is equal to p_22346416 and since 420039019 and 22346416 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (420039029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210019509 + 210019510.

It is an arithmetic number, because the mean of its divisors is an integer number (210019510).

Almost surely, 2^420039019 is an apocalyptic number.

420039019 is a deficient number, since it is larger than the sum of its proper divisors (1).

420039019 is an equidigital number, since it uses as much as digits as its factorization.

420039019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 420039019 is about 20494.8534759339. The cubic root of 420039019 is about 748.9104291396.

The spelling of 420039019 in words is "four hundred twenty million, thirty-nine thousand, nineteen".