122381293 has 4 divisors (see below), whose sum is σ = 124690428. Its totient is φ = 120072160.

The previous prime is 122381291. The next prime is 122381309. The reversal of 122381293 is 392183221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78464164 + 43917129 = 8858^2 + 6627^2 .

It is a cyclic number.

It is not a de Polignac number, because 122381293 - 2¹ = 122381291 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122381291) 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 in 3 ways as a sum of consecutive naturals, for example, 1154488 + ... + 1154593.

It is an arithmetic number, because the mean of its divisors is an integer number (31172607).

Almost surely, 2^122381293 is an apocalyptic number.

It is an amenable number.

122381293 is a deficient number, since it is larger than the sum of its proper divisors (2309135).

122381293 is an equidigital number, since it uses as much as digits as its factorization.

122381293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309134.

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

The square root of 122381293 is about 11062.6078751802. The cubic root of 122381293 is about 496.4837201873.

It can be divided in two parts, 12238 and 1293, that added together give a palindrome (13531).

The spelling of 122381293 in words is "one hundred twenty-two million, three hundred eighty-one thousand, two hundred ninety-three".