121943980 has 12 divisors (see below), whose sum is σ = 256082400. Its totient is φ = 48777584.

The previous prime is 121943977. The next prime is 121944023. The reversal of 121943980 is 89349121.

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, 3048580 + ... + 3048619.

It is an arithmetic number, because the mean of its divisors is an integer number (21340200).

Almost surely, 2^121943980 is an apocalyptic number.

121943980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121943980 is an abundant number, since it is smaller than the sum of its proper divisors (134138420).

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

121943980 is a wasteful number, since it uses less digits than its factorization.

121943980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6097208 (or 6097206 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 121943980 is about 11042.8248197642. The cubic root of 121943980 is about 495.8916419121.

The spelling of 121943980 in words is "one hundred twenty-one million, nine hundred forty-three thousand, nine hundred eighty".