121593620 has 24 divisors (see below), whose sum is σ = 256019400. Its totient is φ = 48509312.

The previous prime is 121593601. The next prime is 121593629. The reversal of 121593620 is 26395121.

It can be written as a sum of positive squares in 4 ways, for example, as 34245904 + 87347716 = 5852^2 + 9346^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121593629) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 35 + ... + 15594.

It is an arithmetic number, because the mean of its divisors is an integer number (10667475).

Almost surely, 2^121593620 is an apocalyptic number.

121593620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121593620 is an abundant number, since it is smaller than the sum of its proper divisors (134425780).

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

121593620 is a wasteful number, since it uses less digits than its factorization.

121593620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16027 (or 16025 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 121593620 is about 11026.9497142229. The cubic root of 121593620 is about 495.4162671965.

The spelling of 121593620 in words is "one hundred twenty-one million, five hundred ninety-three thousand, six hundred twenty".