121440504 has 16 divisors (see below), whose sum is σ = 303601320. Its totient is φ = 40480160.

The previous prime is 121440493. The next prime is 121440509. The reversal of 121440504 is 405044121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121440509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2529987 + ... + 2530034.

Almost surely, 2^121440504 is an apocalyptic number.

It is an amenable number.

121440504 is an abundant number, since it is smaller than the sum of its proper divisors (182160816).

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

121440504 is a wasteful number, since it uses less digits than its factorization.

121440504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5060030 (or 5060026 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 121440504 is about 11020.0047186923. The cubic root of 121440504 is about 495.2082299110.

Adding to 121440504 its reverse (405044121), we get a palindrome (526484625).

The spelling of 121440504 in words is "one hundred twenty-one million, four hundred forty thousand, five hundred four".