121604500 has 24 divisors (see below), whose sum is σ = 265585320. Its totient is φ = 48641600.

The previous prime is 121604491. The next prime is 121604521. The reversal of 121604500 is 5406121.

It can be written as a sum of positive squares in 4 ways, for example, as 13527684 + 108076816 = 3678^2 + 10396^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121105 + ... + 122104.

It is an arithmetic number, because the mean of its divisors is an integer number (11066055).

Almost surely, 2^121604500 is an apocalyptic number.

121604500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121604500 is an abundant number, since it is smaller than the sum of its proper divisors (143980820).

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

121604500 is a wasteful number, since it uses less digits than its factorization.

121604500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243228 (or 243216 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 121604500 is about 11027.4430399798. The cubic root of 121604500 is about 495.4310431040.

The spelling of 121604500 in words is "one hundred twenty-one million, six hundred four thousand, five hundred".