422013251 has 12 divisors (see below), whose sum is σ = 466075320. Its totient is φ = 378958080.

The previous prime is 422013187. The next prime is 422013257. The reversal of 422013251 is 152310224.

It is not a de Polignac number, because 422013251 - 2⁶ = 422013187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422013257) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72995 + ... + 78563.

It is an arithmetic number, because the mean of its divisors is an integer number (38839610).

Almost surely, 2^422013251 is an apocalyptic number.

422013251 is a deficient number, since it is larger than the sum of its proper divisors (44062069).

422013251 is an equidigital number, since it uses as much as digits as its factorization.

422013251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5746 (or 5663 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 422013251 is about 20542.9611059360. The cubic root of 422013251 is about 750.0819175709.

Adding to 422013251 its reverse (152310224), we get a palindrome (574323475).

It can be divided in two parts, 4220 and 13251, that added together give a palindrome (17471).

The spelling of 422013251 in words is "four hundred twenty-two million, thirteen thousand, two hundred fifty-one".