420051769 has 4 divisors (see below), whose sum is σ = 425368960. Its totient is φ = 414734580.

The previous prime is 420051761. The next prime is 420051781. The reversal of 420051769 is 967150024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420051769 - 2³ = 420051761 is a prime.

It is a super-2 number, since 2×420051769² = 352886977280058722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420051761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2658477 + ... + 2658634.

It is an arithmetic number, because the mean of its divisors is an integer number (106342240).

Almost surely, 2^420051769 is an apocalyptic number.

It is an amenable number.

420051769 is a deficient number, since it is larger than the sum of its proper divisors (5317191).

420051769 is an equidigital number, since it uses as much as digits as its factorization.

420051769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5317190.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 420051769 is about 20495.1645272733. The cubic root of 420051769 is about 748.9180066192.

The spelling of 420051769 in words is "four hundred twenty million, fifty-one thousand, seven hundred sixty-nine".