121430180 has 12 divisors (see below), whose sum is σ = 255003420. Its totient is φ = 48572064.

The previous prime is 121430173. The next prime is 121430191. The reversal of 121430180 is 81034121.

It can be written as a sum of positive squares in 2 ways, for example, as 45670564 + 75759616 = 6758^2 + 8704^2 .

It is a super-2 number, since 2×121430180² = 29490577229664800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 6071509 = 121430180 / (1 + 2 + 1 + 4 + 3 + 0 + 1 + 8 + 0).

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 3 ways as a sum of consecutive naturals, for example, 3035735 + ... + 3035774.

It is an arithmetic number, because the mean of its divisors is an integer number (21250285).

Almost surely, 2^121430180 is an apocalyptic number.

121430180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121430180 is an abundant number, since it is smaller than the sum of its proper divisors (133573240).

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

121430180 is a wasteful number, since it uses less digits than its factorization.

121430180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071518 (or 6071516 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 121430180 is about 11019.5362878843. The cubic root of 121430180 is about 495.1941964969.

The spelling of 121430180 in words is "one hundred twenty-one million, four hundred thirty thousand, one hundred eighty".