121938761 has 8 divisors (see below), whose sum is σ = 139426560. Its totient is φ = 104467968.

The previous prime is 121938749. The next prime is 121938767. The reversal of 121938761 is 167839121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121938761 - 2¹⁰ = 121937737 is a prime.

It is a super-2 number, since 2×121938761² = 29738122868430242, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121938767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21680 + ... + 26718.

It is an arithmetic number, because the mean of its divisors is an integer number (17428320).

Almost surely, 2^121938761 is an apocalyptic number.

It is an amenable number.

121938761 is a deficient number, since it is larger than the sum of its proper divisors (17487799).

121938761 is an equidigital number, since it uses as much as digits as its factorization.

121938761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8503.

The product of its digits is 18144, while the sum is 38.

The square root of 121938761 is about 11042.5885099464. The cubic root of 121938761 is about 495.8845673647.

The spelling of 121938761 in words is "one hundred twenty-one million, nine hundred thirty-eight thousand, seven hundred sixty-one".