135125375123 has 2 divisors, whose sum is σ = 135125375124. Its totient is φ = 135125375122.

The previous prime is 135125375113. The next prime is 135125375171. The reversal of 135125375123 is 321573521531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135125375123 - 2⁶ = 135125375059 is a prime.

It is not a weakly prime, because it can be changed into another prime (135125375113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67562687561 + 67562687562.

It is an arithmetic number, because the mean of its divisors is an integer number (67562687562).

Almost surely, 2^135125375123 is an apocalyptic number.

135125375123 is a deficient number, since it is larger than the sum of its proper divisors (1).

135125375123 is an equidigital number, since it uses as much as digits as its factorization.

135125375123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94500, while the sum is 38.

Adding to 135125375123 its reverse (321573521531), we get a palindrome (456698896654).

The spelling of 135125375123 in words is "one hundred thirty-five billion, one hundred twenty-five million, three hundred seventy-five thousand, one hundred twenty-three".