121452020 has 12 divisors (see below), whose sum is σ = 255049284. Its totient is φ = 48580800.

The previous prime is 121452013. The next prime is 121452041. The reversal of 121452020 is 20254121.

It can be written as a sum of positive squares in 2 ways, for example, as 41242084 + 80209936 = 6422^2 + 8956^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121452020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3036281 + ... + 3036320.

It is an arithmetic number, because the mean of its divisors is an integer number (21254107).

Almost surely, 2^121452020 is an apocalyptic number.

121452020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121452020 is an abundant number, since it is smaller than the sum of its proper divisors (133597264).

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

121452020 is a wasteful number, since it uses less digits than its factorization.

121452020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6072610 (or 6072608 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 121452020 is about 11020.5272106193. The cubic root of 121452020 is about 495.2238826725.

The spelling of 121452020 in words is "one hundred twenty-one million, four hundred fifty-two thousand, twenty".