122420254 has 16 divisors (see below), whose sum is σ = 200493936. Its totient is φ = 55598400.

The previous prime is 122420227. The next prime is 122420261. The reversal of 122420254 is 452024221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50314 + ... + 52690.

It is an arithmetic number, because the mean of its divisors is an integer number (12530871).

Almost surely, 2^122420254 is an apocalyptic number.

122420254 is a deficient number, since it is larger than the sum of its proper divisors (78073682).

122420254 is a wasteful number, since it uses less digits than its factorization.

122420254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 122420254 is about 11064.3686670320. The cubic root of 122420254 is about 496.5364010326.

Adding to 122420254 its reverse (452024221), we get a palindrome (574444475).

The spelling of 122420254 in words is "one hundred twenty-two million, four hundred twenty thousand, two hundred fifty-four".