121433240 has 32 divisors (see below), whose sum is σ = 273911760. Its totient is φ = 48451200.

The previous prime is 121433239. The next prime is 121433251. The reversal of 121433240 is 42334121.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 13235 + ... + 20445.

Almost surely, 2^121433240 is an apocalyptic number.

121433240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121433240 is an abundant number, since it is smaller than the sum of its proper divisors (152478520).

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

121433240 is a wasteful number, since it uses less digits than its factorization.

121433240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7643 (or 7639 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 121433240 is about 11019.6751313276. The cubic root of 121433240 is about 495.1983560381.

Adding to 121433240 its reverse (42334121), we get a palindrome (163767361).

The spelling of 121433240 in words is "one hundred twenty-one million, four hundred thirty-three thousand, two hundred forty".