420324340251 has 32 divisors (see below), whose sum is σ = 585865589760. Its totient is φ = 267842824704.

The previous prime is 420324340147. The next prime is 420324340259. The reversal of 420324340251 is 152043423024.

It is not a de Polignac number, because 420324340251 - 2³³ = 411734405659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (420324340259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 969085 + ... + 1334081.

It is an arithmetic number, because the mean of its divisors is an integer number (18308299680).

Almost surely, 2^420324340251 is an apocalyptic number.

420324340251 is a deficient number, since it is larger than the sum of its proper divisors (165541249509).

420324340251 is a wasteful number, since it uses less digits than its factorization.

420324340251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365235.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 420324340251 its reverse (152043423024), we get a palindrome (572367763275).

The spelling of 420324340251 in words is "four hundred twenty billion, three hundred twenty-four million, three hundred forty thousand, two hundred fifty-one".