123513126 has 32 divisors (see below), whose sum is σ = 285337728. Its totient is φ = 35226240.

The previous prime is 123513113. The next prime is 123513163. The reversal of 123513126 is 621315321.

It is a junction number, because it is equal to n+sod(n) for n = 123513096 and 123513105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53920 + ... + 56163.

It is an arithmetic number, because the mean of its divisors is an integer number (8916804).

Almost surely, 2^123513126 is an apocalyptic number.

123513126 is an abundant number, since it is smaller than the sum of its proper divisors (161824602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123513126 is a wasteful number, since it uses less digits than its factorization.

123513126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110116.

The product of its digits is 1080, while the sum is 24.

The square root of 123513126 is about 11113.6459364153. The cubic root of 123513126 is about 498.0095883704.

Adding to 123513126 its reverse (621315321), we get a palindrome (744828447).

The spelling of 123513126 in words is "one hundred twenty-three million, five hundred thirteen thousand, one hundred twenty-six".