121935629 has 2 divisors, whose sum is σ = 121935630. Its totient is φ = 121935628.

The previous prime is 121935587. The next prime is 121935643. The reversal of 121935629 is 926539121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90687529 + 31248100 = 9523^2 + 5590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121935629 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121935592 and 121935601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121935529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60967814 + 60967815.

It is an arithmetic number, because the mean of its divisors is an integer number (60967815).

Almost surely, 2^121935629 is an apocalyptic number.

It is an amenable number.

121935629 is a deficient number, since it is larger than the sum of its proper divisors (1).

121935629 is an equidigital number, since it uses as much as digits as its factorization.

121935629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29160, while the sum is 38.

The square root of 121935629 is about 11042.4466944604. The cubic root of 121935629 is about 495.8803217260.

The spelling of 121935629 in words is "one hundred twenty-one million, nine hundred thirty-five thousand, six hundred twenty-nine".