15423123505142 has 32 divisors (see below), whose sum is σ = 24831852091200. Its totient is φ = 7158301129728.

The previous prime is 15423123505051. The next prime is 15423123505147. The reversal of 15423123505142 is 24150532132451.

It is a junction number, because it is equal to n+sod(n) for n = 15423123505096 and 15423123505105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15423123505147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107123159 + ... + 107267037.

It is an arithmetic number, because the mean of its divisors is an integer number (775995377850).

Almost surely, 2^{15423123505142} is an apocalyptic number.

15423123505142 is a deficient number, since it is larger than the sum of its proper divisors (9408728586058).

15423123505142 is a wasteful number, since it uses less digits than its factorization.

15423123505142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187160.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 15423123505142 its reverse (24150532132451), we get a palindrome (39573655637593).

The spelling of 15423123505142 in words is "fifteen trillion, four hundred twenty-three billion, one hundred twenty-three million, five hundred five thousand, one hundred forty-two".