125438099 has 2 divisors, whose sum is σ = 125438100. Its totient is φ = 125438098.

The previous prime is 125438081. The next prime is 125438141. The reversal of 125438099 is 990834521.

It is a weak prime.

It is an emirp because it is prime and its reverse (990834521) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125438099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (125437099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62719049 + 62719050.

It is an arithmetic number, because the mean of its divisors is an integer number (62719050).

Almost surely, 2^125438099 is an apocalyptic number.

125438099 is a deficient number, since it is larger than the sum of its proper divisors (1).

125438099 is an equidigital number, since it uses as much as digits as its factorization.

125438099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 125438099 is about 11199.9151336070. The cubic root of 125438099 is about 500.5834509053.

The spelling of 125438099 in words is "one hundred twenty-five million, four hundred thirty-eight thousand, ninety-nine".