126123113 has 2 divisors, whose sum is σ = 126123114. Its totient is φ = 126123112.

The previous prime is 126123103. The next prime is 126123131. The reversal of 126123113 is 311321621.

Together with next prime (126123131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121594729 + 4528384 = 11027^2 + 2128^2 .

It is a cyclic number.

It is not a de Polignac number, because 126123113 - 2²² = 121928809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126123103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63061556 + 63061557.

It is an arithmetic number, because the mean of its divisors is an integer number (63061557).

Almost surely, 2^126123113 is an apocalyptic number.

It is an amenable number.

126123113 is a deficient number, since it is larger than the sum of its proper divisors (1).

126123113 is an equidigital number, since it uses as much as digits as its factorization.

126123113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 20.

The square root of 126123113 is about 11230.4547102956. The cubic root of 126123113 is about 501.4930213371.

Adding to 126123113 its reverse (311321621), we get a palindrome (437444734).

The spelling of 126123113 in words is "one hundred twenty-six million, one hundred twenty-three thousand, one hundred thirteen".