121253750 has 20 divisors (see below), whose sum is σ = 227280372. Its totient is φ = 48501000.

The previous prime is 121253653. The next prime is 121253761. The reversal of 121253750 is 57352121.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 47252 + ... + 49751.

Almost surely, 2^121253750 is an apocalyptic number.

121253750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121253750 is a deficient number, since it is larger than the sum of its proper divisors (106026622).

121253750 is an frugal number, since it uses more digits than its factorization.

121253750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97025 (or 97010 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 121253750 is about 11011.5280501845. The cubic root of 121253750 is about 494.9542521405.

The spelling of 121253750 in words is "one hundred twenty-one million, two hundred fifty-three thousand, seven hundred fifty".