5123313111042 has 128 divisors (see below), whose sum is σ = 13353864768000. Its totient is φ = 1425700942848.

The previous prime is 5123313111023. The next prime is 5123313111061. The reversal of 5123313111042 is 2401113133215.

5123313111042 is a `hidden beast` number, since 5 + 1 + 2 + 331 + 311 + 10 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (5123313111023) and next prime (5123313111061).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 5123313110997 and 5123313111015.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1811334 + ... + 3677982.

It is an arithmetic number, because the mean of its divisors is an integer number (104327068500).

Almost surely, 2^{5123313111042} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5123313111042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6676932384000).

5123313111042 is an abundant number, since it is smaller than the sum of its proper divisors (8230551656958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5123313111042 is a wasteful number, since it uses less digits than its factorization.

5123313111042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866857 (or 1866851 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

Adding to 5123313111042 its reverse (2401113133215), we get a palindrome (7524426244257).

The spelling of 5123313111042 in words is "five trillion, one hundred twenty-three billion, three hundred thirteen million, one hundred eleven thousand, forty-two".