123791293 has 2 divisors, whose sum is σ = 123791294. Its totient is φ = 123791292.

The previous prime is 123791287. The next prime is 123791299. The reversal of 123791293 is 392197321.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (123791287) and next prime (123791299).

It can be written as a sum of positive squares in only one way, i.e., 75724804 + 48066489 = 8702^2 + 6933^2 .

It is an emirp because it is prime and its reverse (392197321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123791293 - 2²¹ = 121694141 is a prime.

It is a super-2 number, since 2×123791293² = 30648568445223698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123791299) 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, 61895646 + 61895647.

It is an arithmetic number, because the mean of its divisors is an integer number (61895647).

Almost surely, 2^123791293 is an apocalyptic number.

It is an amenable number.

123791293 is a deficient number, since it is larger than the sum of its proper divisors (1).

123791293 is an equidigital number, since it uses as much as digits as its factorization.

123791293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 37.

The square root of 123791293 is about 11126.1535581709. The cubic root of 123791293 is about 498.3831680108.

The spelling of 123791293 in words is "one hundred twenty-three million, seven hundred ninety-one thousand, two hundred ninety-three".