122734391 has 12 divisors (see below), whose sum is σ = 134289792. Its totient is φ = 112110336.

The previous prime is 122734369. The next prime is 122734399. The reversal of 122734391 is 193437221.

It is not a de Polignac number, because 122734391 - 2¹⁸ = 122472247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122734399) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12650 + ... + 20136.

It is an arithmetic number, because the mean of its divisors is an integer number (11190816).

Almost surely, 2^122734391 is an apocalyptic number.

122734391 is a deficient number, since it is larger than the sum of its proper divisors (11555401).

122734391 is an equidigital number, since it uses as much as digits as its factorization.

122734391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7610 (or 7597 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 122734391 is about 11078.5554563761. Note that the first 3 decimals coincide. The cubic root of 122734391 is about 496.9607513670.

The spelling of 122734391 in words is "one hundred twenty-two million, seven hundred thirty-four thousand, three hundred ninety-one".