121422624 has 24 divisors (see below), whose sum is σ = 318734640. Its totient is φ = 40474176.

The previous prime is 121422617. The next prime is 121422643. The reversal of 121422624 is 426224121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 121422594 and 121422603.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 632314 + ... + 632505.

It is an arithmetic number, because the mean of its divisors is an integer number (13280610).

Almost surely, 2^121422624 is an apocalyptic number.

It is an amenable number.

121422624 is an abundant number, since it is smaller than the sum of its proper divisors (197312016).

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

121422624 is a wasteful number, since it uses less digits than its factorization.

121422624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264832 (or 1264824 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 121422624 is about 11019.1934369082. The cubic root of 121422624 is about 495.1839251213.

Adding to 121422624 its reverse (426224121), we get a palindrome (547646745).

The spelling of 121422624 in words is "one hundred twenty-one million, four hundred twenty-two thousand, six hundred twenty-four".