121387630 has 96 divisors (see below), whose sum is σ = 279963648. Its totient is φ = 37065600.

The previous prime is 121387601. The next prime is 121387631. The reversal of 121387630 is 36783121.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 121387592 and 121387601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121387631) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 366565 + ... + 366895.

It is an arithmetic number, because the mean of its divisors is an integer number (2916288).

Almost surely, 2^121387630 is an apocalyptic number.

121387630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121387630 is an abundant number, since it is smaller than the sum of its proper divisors (158576018).

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

121387630 is a wasteful number, since it uses less digits than its factorization.

121387630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 121387630 is about 11017.6054567224. The cubic root of 121387630 is about 495.1363498818.

The spelling of 121387630 in words is "one hundred twenty-one million, three hundred eighty-seven thousand, six hundred thirty".