121540204 has 12 divisors (see below), whose sum is σ = 212916928. Its totient is φ = 60706800.

The previous prime is 121540193. The next prime is 121540213. The reversal of 121540204 is 402045121.

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, 11367 + ... + 19294.

Almost surely, 2^121540204 is an apocalyptic number.

It is an amenable number.

121540204 is a deficient number, since it is larger than the sum of its proper divisors (91376724).

121540204 is a wasteful number, since it uses less digits than its factorization.

121540204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31656 (or 31654 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 121540204 is about 11024.5273821602. The cubic root of 121540204 is about 495.3437112204.

Adding to 121540204 its reverse (402045121), we get a palindrome (523585325).

The spelling of 121540204 in words is "one hundred twenty-one million, five hundred forty thousand, two hundred four".