121723660 has 12 divisors (see below), whose sum is σ = 255619728. Its totient is φ = 48689456.

The previous prime is 121723619. The next prime is 121723663. The reversal of 121723660 is 66327121.

It is not an unprimeable number, because it can be changed into a prime (121723663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3043072 + ... + 3043111.

It is an arithmetic number, because the mean of its divisors is an integer number (21301644).

Almost surely, 2^121723660 is an apocalyptic number.

121723660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121723660 is an abundant number, since it is smaller than the sum of its proper divisors (133896068).

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

121723660 is a wasteful number, since it uses less digits than its factorization.

121723660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6086192 (or 6086190 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 121723660 is about 11032.8446014616. The cubic root of 121723660 is about 495.5928142299.

The spelling of 121723660 in words is "one hundred twenty-one million, seven hundred twenty-three thousand, six hundred sixty".