420213379 has 2 divisors, whose sum is σ = 420213380. Its totient is φ = 420213378.

The previous prime is 420213377. The next prime is 420213457. The reversal of 420213379 is 973312024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420213379 - 2¹ = 420213377 is a prime.

Together with 420213377, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 420213379.

It is not a weakly prime, because it can be changed into another prime (420213371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210106689 + 210106690.

It is an arithmetic number, because the mean of its divisors is an integer number (210106690).

Almost surely, 2^420213379 is an apocalyptic number.

420213379 is a deficient number, since it is larger than the sum of its proper divisors (1).

420213379 is an equidigital number, since it uses as much as digits as its factorization.

420213379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 420213379 is about 20499.1067854187. The cubic root of 420213379 is about 749.0140401158.

The spelling of 420213379 in words is "four hundred twenty million, two hundred thirteen thousand, three hundred seventy-nine".