123712655 has 16 divisors (see below), whose sum is σ = 171478944. Its totient is φ = 84679680.

The previous prime is 123712627. The next prime is 123712679. The reversal of 123712655 is 556217321.

It is not a de Polignac number, because 123712655 - 2⁸ = 123712399 is a prime.

It is a Duffinian number.

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, 65222 + ... + 67091.

It is an arithmetic number, because the mean of its divisors is an integer number (10717434).

Almost surely, 2^123712655 is an apocalyptic number.

123712655 is a deficient number, since it is larger than the sum of its proper divisors (47766289).

123712655 is a wasteful number, since it uses less digits than its factorization.

123712655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132346.

The product of its digits is 12600, while the sum is 32.

The square root of 123712655 is about 11122.6190710642. The cubic root of 123712655 is about 498.2776135829.

Adding to 123712655 its reverse (556217321), we get a palindrome (679929976).

The spelling of 123712655 in words is "one hundred twenty-three million, seven hundred twelve thousand, six hundred fifty-five".