422424251 has 4 divisors (see below), whose sum is σ = 422980104. Its totient is φ = 421868400.

The previous prime is 422424241. The next prime is 422424263. The reversal of 422424251 is 152424224.

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 422424251 - 2¹⁸ = 422162107 is a prime.

It is a super-2 number, since 2×422424251² = 356884495665822002, which contains 22 as substring.

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 422424251.

It is not an unprimeable number, because it can be changed into a prime (422424241) 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, 276785 + ... + 278306.

It is an arithmetic number, because the mean of its divisors is an integer number (105745026).

Almost surely, 2^422424251 is an apocalyptic number.

422424251 is a deficient number, since it is larger than the sum of its proper divisors (555853).

422424251 is an equidigital number, since it uses as much as digits as its factorization.

422424251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555852.

The product of its digits is 5120, while the sum is 26.

The square root of 422424251 is about 20552.9620979556. The cubic root of 422424251 is about 750.3253409247.

Adding to 422424251 its reverse (152424224), we get a palindrome (574848475).

The spelling of 422424251 in words is "four hundred twenty-two million, four hundred twenty-four thousand, two hundred fifty-one".