123717261 has 8 divisors (see below), whose sum is σ = 167216320. Its totient is φ = 81348192.

The previous prime is 123717247. The next prime is 123717263. The reversal of 123717261 is 162717321.

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

It is not a de Polignac number, because 123717261 - 2⁵ = 123717229 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 (123717263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282241 + ... + 282678.

It is an arithmetic number, because the mean of its divisors is an integer number (20902040).

Almost surely, 2^123717261 is an apocalyptic number.

It is an amenable number.

123717261 is a deficient number, since it is larger than the sum of its proper divisors (43499059).

123717261 is an equidigital number, since it uses as much as digits as its factorization.

123717261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564995.

The product of its digits is 3528, while the sum is 30.

The square root of 123717261 is about 11122.8261246861. The cubic root of 123717261 is about 498.2837973702.

The spelling of 123717261 in words is "one hundred twenty-three million, seven hundred seventeen thousand, two hundred sixty-one".