135102025123 has 12 divisors (see below), whose sum is σ = 149696100840. Its totient is φ = 121809332736.

The previous prime is 135102025073. The next prime is 135102025127. The reversal of 135102025123 is 321520201531.

It is not a de Polignac number, because 135102025123 - 2¹⁷ = 135101894051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135102025127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9288318 + ... + 9302851.

It is an arithmetic number, because the mean of its divisors is an integer number (12474675070).

Almost surely, 2^135102025123 is an apocalyptic number.

135102025123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

135102025123 is a deficient number, since it is larger than the sum of its proper divisors (14594075717).

135102025123 is a wasteful number, since it uses less digits than its factorization.

135102025123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18591238 (or 18591225 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 135102025123 its reverse (321520201531), we get a palindrome (456622226654).

The spelling of 135102025123 in words is "one hundred thirty-five billion, one hundred two million, twenty-five thousand, one hundred twenty-three".