121957750 has 16 divisors (see below), whose sum is σ = 228305376. Its totient is φ = 48783000.

The previous prime is 121957729. The next prime is 121957763. The reversal of 121957750 is 57759121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243666 + ... + 244165.

It is an arithmetic number, because the mean of its divisors is an integer number (14269086).

Almost surely, 2^121957750 is an apocalyptic number.

121957750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121957750 is a deficient number, since it is larger than the sum of its proper divisors (106347626).

121957750 is an equidigital number, since it uses as much as digits as its factorization.

121957750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487848 (or 487838 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 37.

The square root of 121957750 is about 11043.4482839374. The cubic root of 121957750 is about 495.9103066873.

The spelling of 121957750 in words is "one hundred twenty-one million, nine hundred fifty-seven thousand, seven hundred fifty".