125688103 has 4 divisors (see below), whose sum is σ = 125813680. Its totient is φ = 125562528.

The previous prime is 125688091. The next prime is 125688107. The reversal of 125688103 is 301886521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301886521 = 83 ⋅3637187.

It is a cyclic number.

It is not a de Polignac number, because 125688103 - 2⁵ = 125688071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125688107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61275 + ... + 63292.

It is an arithmetic number, because the mean of its divisors is an integer number (31453420).

Almost surely, 2^125688103 is an apocalyptic number.

125688103 is a deficient number, since it is larger than the sum of its proper divisors (125577).

125688103 is a wasteful number, since it uses less digits than its factorization.

125688103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125576.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 125688103 is about 11211.0705554822. The cubic root of 125688103 is about 500.9157922916.

The spelling of 125688103 in words is "one hundred twenty-five million, six hundred eighty-eight thousand, one hundred three".