121660452 has 36 divisors (see below), whose sum is σ = 318137820. Its totient is φ = 39154752.

The previous prime is 121660447. The next prime is 121660457. The reversal of 121660452 is 254066121.

121660452 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 604 + 52 = 666.

It is an interprime number because it is at equal distance from previous prime (121660447) and next prime (121660457).

It can be written as a sum of positive squares in 2 ways, for example, as 74545956 + 47114496 = 8634^2 + 6864^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (121660457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57223 + ... + 59310.

Almost surely, 2^121660452 is an apocalyptic number.

121660452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121660452 is an abundant number, since it is smaller than the sum of its proper divisors (196477368).

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

121660452 is a wasteful number, since it uses less digits than its factorization.

121660452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116572 (or 116567 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 121660452 is about 11029.9796917311. The cubic root of 121660452 is about 495.5070164638.

The spelling of 121660452 in words is "one hundred twenty-one million, six hundred sixty thousand, four hundred fifty-two".