121782950 has 24 divisors (see below), whose sum is σ = 226808400. Its totient is φ = 48650400.

The previous prime is 121782943. The next prime is 121782961. The reversal of 121782950 is 59287121.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121782950.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69080 + ... + 70820.

It is an arithmetic number, because the mean of its divisors is an integer number (9450350).

Almost surely, 2^121782950 is an apocalyptic number.

121782950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121782950 is a deficient number, since it is larger than the sum of its proper divisors (105025450).

121782950 is a wasteful number, since it uses less digits than its factorization.

121782950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152 (or 3147 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 121782950 is about 11035.5312513716. The cubic root of 121782950 is about 495.6732667577.

The spelling of 121782950 in words is "one hundred twenty-one million, seven hundred eighty-two thousand, nine hundred fifty".