121422456 has 64 divisors (see below), whose sum is σ = 346423200. Its totient is φ = 39377664.

The previous prime is 121422439. The next prime is 121422467. The reversal of 121422456 is 654224121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396 + ... + 15588.

Almost surely, 2^121422456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121422456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173211600).

121422456 is an abundant number, since it is smaller than the sum of its proper divisors (225000744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121422456 is a wasteful number, since it uses less digits than its factorization.

121422456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15245 (or 15235 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 121422456 is about 11019.1858138431. The cubic root of 121422456 is about 495.1836967428.

Adding to 121422456 its reverse (654224121), we get a palindrome (775646577).

The spelling of 121422456 in words is "one hundred twenty-one million, four hundred twenty-two thousand, four hundred fifty-six".