123125261 has 8 divisors (see below), whose sum is σ = 140809344. Its totient is φ = 105464880.

The previous prime is 123125257. The next prime is 123125269. The reversal of 123125261 is 162521321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123125261 - 2² = 123125257 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 (123125269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7136 + ... + 17238.

It is an arithmetic number, because the mean of its divisors is an integer number (17601168).

Almost surely, 2^123125261 is an apocalyptic number.

It is an amenable number.

123125261 is a deficient number, since it is larger than the sum of its proper divisors (17684083).

123125261 is a wasteful number, since it uses less digits than its factorization.

123125261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11851.

The product of its digits is 720, while the sum is 23.

The square root of 123125261 is about 11096.1822713941. The cubic root of 123125261 is about 497.4877463039.

Adding to 123125261 its reverse (162521321), we get a palindrome (285646582).

The spelling of 123125261 in words is "one hundred twenty-three million, one hundred twenty-five thousand, two hundred sixty-one".