121752630 has 24 divisors (see below), whose sum is σ = 316557072. Its totient is φ = 32467344.

The previous prime is 121752629. The next prime is 121752647. The reversal of 121752630 is 36257121.

It is a happy number.

121752630 is a `hidden beast` number, since 1 + 21 + 7 + 5 + 2 + 630 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 121752594 and 121752603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 676314 + ... + 676493.

It is an arithmetic number, because the mean of its divisors is an integer number (13189878).

Almost surely, 2^121752630 is an apocalyptic number.

121752630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121752630 is an abundant number, since it is smaller than the sum of its proper divisors (194804442).

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

121752630 is a wasteful number, since it uses less digits than its factorization.

121752630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352820 (or 1352817 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 121752630 is about 11034.1574213893. The cubic root of 121752630 is about 495.6321278275.

The spelling of 121752630 in words is "one hundred twenty-one million, seven hundred fifty-two thousand, six hundred thirty".