121253449 has 2 divisors, whose sum is σ = 121253450. Its totient is φ = 121253448.

The previous prime is 121253443. The next prime is 121253479. The reversal of 121253449 is 944352121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90117049 + 31136400 = 9493^2 + 5580^2 .

It is a cyclic number.

It is not a de Polignac number, because 121253449 - 2⁵ = 121253417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121253449.

It is not a weakly prime, because it can be changed into another prime (121253443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60626724 + 60626725.

It is an arithmetic number, because the mean of its divisors is an integer number (60626725).

Almost surely, 2^121253449 is an apocalyptic number.

It is an amenable number.

121253449 is a deficient number, since it is larger than the sum of its proper divisors (1).

121253449 is an equidigital number, since it uses as much as digits as its factorization.

121253449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 121253449 is about 11011.5143826814. The cubic root of 121253449 is about 494.9538425825.

The spelling of 121253449 in words is "one hundred twenty-one million, two hundred fifty-three thousand, four hundred forty-nine".