420632519 has 2 divisors, whose sum is σ = 420632520. Its totient is φ = 420632518.

The previous prime is 420632503. The next prime is 420632551. The reversal of 420632519 is 915236024.

It is a happy number.

It is an a-pointer prime, because the next prime (420632551) can be obtained adding 420632519 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420632519 - 2⁴ = 420632503 is a prime.

It is a super-2 number, since 2×420632519² = 353863432080570722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422632519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210316259 + 210316260.

It is an arithmetic number, because the mean of its divisors is an integer number (210316260).

Almost surely, 2^420632519 is an apocalyptic number.

420632519 is a deficient number, since it is larger than the sum of its proper divisors (1).

420632519 is an equidigital number, since it uses as much as digits as its factorization.

420632519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 420632519 is about 20509.3276096512. The cubic root of 420632519 is about 749.2629909571.

The spelling of 420632519 in words is "four hundred twenty million, six hundred thirty-two thousand, five hundred nineteen".