121662790 has 32 divisors (see below), whose sum is σ = 224570880. Its totient is φ = 47434464.

The previous prime is 121662773. The next prime is 121662791. The reversal of 121662790 is 97266121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121662791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177789 + ... + 178471.

It is an arithmetic number, because the mean of its divisors is an integer number (7017840).

Almost surely, 2^121662790 is an apocalyptic number.

121662790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121662790 is a deficient number, since it is larger than the sum of its proper divisors (102908090).

121662790 is a wasteful number, since it uses less digits than its factorization.

121662790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 121662790 is about 11030.0856750979. The cubic root of 121662790 is about 495.5101905656.

The spelling of 121662790 in words is "one hundred twenty-one million, six hundred sixty-two thousand, seven hundred ninety".