121402750 has 64 divisors (see below), whose sum is σ = 261885312. Its totient is φ = 41280000.

The previous prime is 121402733. The next prime is 121402751. The reversal of 121402750 is 57204121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121402751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302550 + ... + 302950.

It is an arithmetic number, because the mean of its divisors is an integer number (4091958).

Almost surely, 2^121402750 is an apocalyptic number.

121402750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121402750 is an abundant number, since it is smaller than the sum of its proper divisors (140482562).

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

121402750 is a wasteful number, since it uses less digits than its factorization.

121402750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598 (or 588 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 121402750 is about 11018.2916098640. The cubic root of 121402750 is about 495.1569070309.

Adding to 121402750 its reverse (57204121), we get a palindrome (178606871).

The spelling of 121402750 in words is "one hundred twenty-one million, four hundred two thousand, seven hundred fifty".