121425144 has 32 divisors (see below), whose sum is σ = 304483920. Its totient is φ = 40352256.

The previous prime is 121425131. The next prime is 121425151. The reversal of 121425144 is 441524121.

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

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582 + ... + 15594.

Almost surely, 2^121425144 is an apocalyptic number.

It is an amenable number.

121425144 is an abundant number, since it is smaller than the sum of its proper divisors (183058776).

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

121425144 is a wasteful number, since it uses less digits than its factorization.

121425144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15359 (or 15355 counting only the distinct ones).

The product of its digits is 1280, while the sum is 24.

The square root of 121425144 is about 11019.3077822520. The cubic root of 121425144 is about 495.1873507730.

Adding to 121425144 its reverse (441524121), we get a palindrome (562949265).

The spelling of 121425144 in words is "one hundred twenty-one million, four hundred twenty-five thousand, one hundred forty-four".