123042112255 has 16 divisors (see below), whose sum is σ = 156088689120. Its totient is φ = 92852725248.

The previous prime is 123042112243. The next prime is 123042112261. The reversal of 123042112255 is 552211240321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 123042112255 - 2⁵ = 123042112223 is a prime.

It is a super-2 number, since 2×123042112255² (a number of 23 digits) contains 22 as substring.

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, 2757222 + ... + 2801491.

It is an arithmetic number, because the mean of its divisors is an integer number (9755543070).

Almost surely, 2^123042112255 is an apocalyptic number.

123042112255 is a deficient number, since it is larger than the sum of its proper divisors (33046576865).

123042112255 is a wasteful number, since it uses less digits than its factorization.

123042112255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5558970.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 123042112255 its reverse (552211240321), we get a palindrome (675253352576).

It can be divided in two parts, 1230421 and 12255, that added together give a triangular number (1242676 = T₁₅₇₆).

The spelling of 123042112255 in words is "one hundred twenty-three billion, forty-two million, one hundred twelve thousand, two hundred fifty-five".