121507427 has 2 divisors, whose sum is σ = 121507428. Its totient is φ = 121507426.

The previous prime is 121507409. The next prime is 121507447. The reversal of 121507427 is 724705121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121507427 - 2¹⁰ = 121506403 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 121507427.

It is not a weakly prime, because it can be changed into another prime (121507447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60753713 + 60753714.

It is an arithmetic number, because the mean of its divisors is an integer number (60753714).

Almost surely, 2^121507427 is an apocalyptic number.

121507427 is a deficient number, since it is larger than the sum of its proper divisors (1).

121507427 is an equidigital number, since it uses as much as digits as its factorization.

121507427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 121507427 is about 11023.0407329375. The cubic root of 121507427 is about 495.2991790684.

The spelling of 121507427 in words is "one hundred twenty-one million, five hundred seven thousand, four hundred twenty-seven".