121743790 has 16 divisors (see below), whose sum is σ = 250444512. Its totient is φ = 41740704.

The previous prime is 121743731. The next prime is 121743803. The reversal of 121743790 is 97347121.

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, 869529 + ... + 869668.

It is an arithmetic number, because the mean of its divisors is an integer number (15652782).

Almost surely, 2^121743790 is an apocalyptic number.

121743790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121743790 is an abundant number, since it is smaller than the sum of its proper divisors (128700722).

121743790 is a wasteful number, since it uses less digits than its factorization.

121743790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739211.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 121743790 is about 11033.7568398076. The cubic root of 121743790 is about 495.6201322097.

The spelling of 121743790 in words is "one hundred twenty-one million, seven hundred forty-three thousand, seven hundred ninety".