121435660 has 12 divisors (see below), whose sum is σ = 255014928. Its totient is φ = 48574256.

The previous prime is 121435651. The next prime is 121435679. The reversal of 121435660 is 66534121.

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, 3035872 + ... + 3035911.

It is an arithmetic number, because the mean of its divisors is an integer number (21251244).

Almost surely, 2^121435660 is an apocalyptic number.

121435660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121435660 is an abundant number, since it is smaller than the sum of its proper divisors (133579268).

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

121435660 is a wasteful number, since it uses less digits than its factorization.

121435660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071792 (or 6071790 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 121435660 is about 11019.7849343805. The cubic root of 121435660 is about 495.2016455604.

Adding to 121435660 its reverse (66534121), we get a palindrome (187969781).

The spelling of 121435660 in words is "one hundred twenty-one million, four hundred thirty-five thousand, six hundred sixty".