121038439 has 2 divisors, whose sum is σ = 121038440. Its totient is φ = 121038438.

The previous prime is 121038403. The next prime is 121038451. The reversal of 121038439 is 934830121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121038439 - 2⁷ = 121038311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121038439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121038469) 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, 60519219 + 60519220.

It is an arithmetic number, because the mean of its divisors is an integer number (60519220).

Almost surely, 2^121038439 is an apocalyptic number.

121038439 is a deficient number, since it is larger than the sum of its proper divisors (1).

121038439 is an equidigital number, since it uses as much as digits as its factorization.

121038439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 121038439 is about 11001.7470885310. The cubic root of 121038439 is about 494.6611141668.

The spelling of 121038439 in words is "one hundred twenty-one million, thirty-eight thousand, four hundred thirty-nine".