121814190 has 48 divisors (see below), whose sum is σ = 326941056. Its totient is φ = 31435200.

The previous prime is 121814167. The next prime is 121814191. The reversal of 121814190 is 91418121.

It is a super-2 number, since 2×121814190² = 29677393770712200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121814191) 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, 19041 + ... + 24620.

It is an arithmetic number, because the mean of its divisors is an integer number (6811272).

Almost surely, 2^121814190 is an apocalyptic number.

121814190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121814190 is an abundant number, since it is smaller than the sum of its proper divisors (205126866).

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

121814190 is a wasteful number, since it uses less digits than its factorization.

121814190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43705 (or 43702 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 121814190 is about 11036.9465886177. The cubic root of 121814190 is about 495.7156468254.

The spelling of 121814190 in words is "one hundred twenty-one million, eight hundred fourteen thousand, one hundred ninety".