121873850 has 48 divisors (see below), whose sum is σ = 274321728. Its totient is φ = 39325440.

The previous prime is 121873831. The next prime is 121873859. The reversal of 121873850 is 58378121.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 121873850.

It is not an unprimeable number, because it can be changed into a prime (121873859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4292 + ... + 16191.

It is an arithmetic number, because the mean of its divisors is an integer number (5715036).

Almost surely, 2^121873850 is an apocalyptic number.

121873850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121873850 is an abundant number, since it is smaller than the sum of its proper divisors (152447878).

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

121873850 is a wasteful number, since it uses less digits than its factorization.

121873850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20519 (or 20514 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 121873850 is about 11039.6489980434. The cubic root of 121873850 is about 495.7965612319.

The spelling of 121873850 in words is "one hundred twenty-one million, eight hundred seventy-three thousand, eight hundred fifty".