121504740 has 48 divisors (see below), whose sum is σ = 388816512. Its totient is φ = 27772416.

The previous prime is 121504739. The next prime is 121504759. The reversal of 121504740 is 47405121.

It is a self number, because there is not a number n which added to its sum of digits gives 121504740.

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, 144229 + ... + 145068.

It is an arithmetic number, because the mean of its divisors is an integer number (8100344).

Almost surely, 2^121504740 is an apocalyptic number.

121504740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121504740 is an abundant number, since it is smaller than the sum of its proper divisors (267311772).

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

121504740 is a wasteful number, since it uses less digits than its factorization.

121504740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289316 (or 289314 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 121504740 is about 11022.9188511936. The cubic root of 121504740 is about 495.2955280468.

Adding to 121504740 its reverse (47405121), we get a palindrome (168909861).

The spelling of 121504740 in words is "one hundred twenty-one million, five hundred four thousand, seven hundred forty".