121959950 has 24 divisors (see below), whose sum is σ = 259252752. Its totient is φ = 41814720.

The previous prime is 121959949. The next prime is 121959973. The reversal of 121959950 is 59959121.

It is a junction number, because it is equal to n+sod(n) for n = 121959898 and 121959907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173879 + ... + 174578.

It is an arithmetic number, because the mean of its divisors is an integer number (10802198).

Almost surely, 2^121959950 is an apocalyptic number.

121959950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121959950 is an abundant number, since it is smaller than the sum of its proper divisors (137292802).

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

121959950 is a wasteful number, since it uses less digits than its factorization.

121959950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348476 (or 348471 counting only the distinct ones).

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 121959950 is about 11043.5478900578. The cubic root of 121959950 is about 495.9132885836.

The spelling of 121959950 in words is "one hundred twenty-one million, nine hundred fifty-nine thousand, nine hundred fifty".