422121254 has 16 divisors (see below), whose sum is σ = 699578208. Its totient is φ = 190008192.

The previous prime is 422121251. The next prime is 422121307. The reversal of 422121254 is 452121224.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422121251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269117 + ... + 270680.

It is an arithmetic number, because the mean of its divisors is an integer number (43723638).

Almost surely, 2^422121254 is an apocalyptic number.

422121254 is a deficient number, since it is larger than the sum of its proper divisors (277456954).

422121254 is a wasteful number, since it uses less digits than its factorization.

422121254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539839.

The product of its digits is 1280, while the sum is 23.

The square root of 422121254 is about 20545.5896483893. The cubic root of 422121254 is about 750.1458999121.

Adding to 422121254 its reverse (452121224), we get a palindrome (874242478).

The spelling of 422121254 in words is "four hundred twenty-two million, one hundred twenty-one thousand, two hundred fifty-four".