121392959 has 2 divisors, whose sum is σ = 121392960. Its totient is φ = 121392958.

The previous prime is 121392917. The next prime is 121392961. The reversal of 121392959 is 959293121.

It is a strong prime.

It is an emirp because it is prime and its reverse (959293121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121392959 - 2⁸ = 121392703 is a prime.

Together with 121392961, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121392059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60696479 + 60696480.

It is an arithmetic number, because the mean of its divisors is an integer number (60696480).

Almost surely, 2^121392959 is an apocalyptic number.

121392959 is a deficient number, since it is larger than the sum of its proper divisors (1).

121392959 is an equidigital number, since it uses as much as digits as its factorization.

121392959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43740, while the sum is 41.

The square root of 121392959 is about 11017.8472942767. The cubic root of 121392959 is about 495.1435953840.

The spelling of 121392959 in words is "one hundred twenty-one million, three hundred ninety-two thousand, nine hundred fifty-nine".