123937091 has 2 divisors, whose sum is σ = 123937092. Its totient is φ = 123937090.

The previous prime is 123937081. The next prime is 123937109. The reversal of 123937091 is 190739321.

Together with next prime (123937109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123937091 - 2²² = 119742787 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123937031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61968545 + 61968546.

It is an arithmetic number, because the mean of its divisors is an integer number (61968546).

Almost surely, 2^123937091 is an apocalyptic number.

123937091 is a deficient number, since it is larger than the sum of its proper divisors (1).

123937091 is an equidigital number, since it uses as much as digits as its factorization.

123937091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 123937091 is about 11132.7036698189. The cubic root of 123937091 is about 498.5787519357.

The spelling of 123937091 in words is "one hundred twenty-three million, nine hundred thirty-seven thousand, ninety-one".