420812351 has 4 divisors (see below), whose sum is σ = 423884112. Its totient is φ = 417740592.

The previous prime is 420812303. The next prime is 420812363. The reversal of 420812351 is 153218024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420812351 - 2²² = 416618047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420812351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420814351) 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, 1535675 + ... + 1535948.

It is an arithmetic number, because the mean of its divisors is an integer number (105971028).

Almost surely, 2^420812351 is an apocalyptic number.

420812351 is a deficient number, since it is larger than the sum of its proper divisors (3071761).

420812351 is a wasteful number, since it uses less digits than its factorization.

420812351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071760.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 420812351 is about 20513.7112926940. The cubic root of 420812351 is about 749.3697526067.

The spelling of 420812351 in words is "four hundred twenty million, eight hundred twelve thousand, three hundred fifty-one".