121601759 has 12 divisors (see below), whose sum is σ = 127650096. Its totient is φ = 115829472.

The previous prime is 121601743. The next prime is 121601783. The reversal of 121601759 is 957106121.

It is not a de Polignac number, because 121601759 - 2⁴ = 121601743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121604759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241502 + ... + 242004.

It is an arithmetic number, because the mean of its divisors is an integer number (10637508).

Almost surely, 2^121601759 is an apocalyptic number.

121601759 is a deficient number, since it is larger than the sum of its proper divisors (6048337).

121601759 is an equidigital number, since it uses as much as digits as its factorization.

121601759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006 (or 983 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 121601759 is about 11027.3187584290. The cubic root of 121601759 is about 495.4273206905.

The spelling of 121601759 in words is "one hundred twenty-one million, six hundred one thousand, seven hundred fifty-nine".