142131123 has 6 divisors (see below), whose sum is σ = 205300524. Its totient is φ = 94754076.

The previous prime is 142131083. The next prime is 142131127. The reversal of 142131123 is 321131241.

It is not a de Polignac number, because 142131123 - 2²⁰ = 141082547 is a prime.

It is a super-2 number, since 2×142131123² = 40402512250482258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142131096 and 142131105.

It is not an unprimeable number, because it can be changed into a prime (142131127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7896165 + ... + 7896182.

It is an arithmetic number, because the mean of its divisors is an integer number (34216754).

Almost surely, 2^142131123 is an apocalyptic number.

142131123 is a deficient number, since it is larger than the sum of its proper divisors (63169401).

142131123 is a wasteful number, since it uses less digits than its factorization.

142131123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15792353 (or 15792350 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 142131123 is about 11921.8758171690. The cubic root of 142131123 is about 521.8708779145.

Adding to 142131123 its reverse (321131241), we get a palindrome (463262364).

The spelling of 142131123 in words is "one hundred forty-two million, one hundred thirty-one thousand, one hundred twenty-three".