123417255117 has 8 divisors (see below), whose sum is σ = 177214520224. Its totient is φ = 75949080048.

The previous prime is 123417255109. The next prime is 123417255127. The reversal of 123417255117 is 711552714321.

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

It is not a de Polignac number, because 123417255117 - 2³ = 123417255109 is a prime.

It is a super-2 number, since 2×123417255117² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3164545003 = 123417255117 / (1 + 2 + 3 + 4 + 1 + 7 + 2 + 5 + 5 + 1 + 1 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123417255127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1582272463 + ... + 1582272540.

It is an arithmetic number, because the mean of its divisors is an integer number (22151815028).

Almost surely, 2^123417255117 is an apocalyptic number.

It is an amenable number.

123417255117 is a deficient number, since it is larger than the sum of its proper divisors (53797265107).

123417255117 is a wasteful number, since it uses less digits than its factorization.

123417255117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3164545019.

The product of its digits is 58800, while the sum is 39.

Adding to 123417255117 its reverse (711552714321), we get a palindrome (834969969438).

The spelling of 123417255117 in words is "one hundred twenty-three billion, four hundred seventeen million, two hundred fifty-five thousand, one hundred seventeen".