121422439 has 2 divisors, whose sum is σ = 121422440. Its totient is φ = 121422438.

The previous prime is 121422409. The next prime is 121422467. The reversal of 121422439 is 934224121.

It is an a-pointer prime, because the next prime (121422467) can be obtained adding 121422439 to its sum of digits (28).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121422439 - 2¹¹ = 121420391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121422409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60711219 + 60711220.

It is an arithmetic number, because the mean of its divisors is an integer number (60711220).

Almost surely, 2^121422439 is an apocalyptic number.

121422439 is a deficient number, since it is larger than the sum of its proper divisors (1).

121422439 is an equidigital number, since it uses as much as digits as its factorization.

121422439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 121422439 is about 11019.1850424612. The cubic root of 121422439 is about 495.1836736331.

It can be divided in two parts, 1214 and 22439, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 121422439 in words is "one hundred twenty-one million, four hundred twenty-two thousand, four hundred thirty-nine".