121612759 has 2 divisors, whose sum is σ = 121612760. Its totient is φ = 121612758.

The previous prime is 121612739. The next prime is 121612769. The reversal of 121612759 is 957216121.

It is a strong prime.

It is an emirp because it is prime and its reverse (957216121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121612759 - 2²³ = 113224151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121612739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60806379 + 60806380.

It is an arithmetic number, because the mean of its divisors is an integer number (60806380).

Almost surely, 2^121612759 is an apocalyptic number.

121612759 is a deficient number, since it is larger than the sum of its proper divisors (1).

121612759 is an equidigital number, since it uses as much as digits as its factorization.

121612759 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7560, while the sum is 34.

The square root of 121612759 is about 11027.8175084647. The cubic root of 121612759 is about 495.4422588960.

The spelling of 121612759 in words is "one hundred twenty-one million, six hundred twelve thousand, seven hundred fifty-nine".