121398795 has 24 divisors (see below), whose sum is σ = 240485856. Its totient is φ = 55496448.

The previous prime is 121398773. The next prime is 121398799. The reversal of 121398795 is 597893121.

It is not a de Polignac number, because 121398795 - 2¹¹ = 121396747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 121398795.

It is not an unprimeable number, because it can be changed into a prime (121398799) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192382 + ... + 193011.

It is an arithmetic number, because the mean of its divisors is an integer number (10020244).

Almost surely, 2^121398795 is an apocalyptic number.

121398795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121398795 is a deficient number, since it is larger than the sum of its proper divisors (119087061).

121398795 is a wasteful number, since it uses less digits than its factorization.

121398795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385411 (or 385408 counting only the distinct ones).

The product of its digits is 136080, while the sum is 45.

The square root of 121398795 is about 11018.1121341181. The cubic root of 121398795 is about 495.1515299785.

The spelling of 121398795 in words is "one hundred twenty-one million, three hundred ninety-eight thousand, seven hundred ninety-five".