121612739 has 2 divisors, whose sum is σ = 121612740. Its totient is φ = 121612738.

The previous prime is 121612723. The next prime is 121612759. The reversal of 121612739 is 937216121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121612739 - 2⁴ = 121612723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121612759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60806369 + 60806370.

It is an arithmetic number, because the mean of its divisors is an integer number (60806370).

Almost surely, 2^121612739 is an apocalyptic number.

121612739 is a deficient number, since it is larger than the sum of its proper divisors (1).

121612739 is an equidigital number, since it uses as much as digits as its factorization.

121612739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 32.

The square root of 121612739 is about 11027.8166016669. The cubic root of 121612739 is about 495.4422317365.

The spelling of 121612739 in words is "one hundred twenty-one million, six hundred twelve thousand, seven hundred thirty-nine".