142315123 has 4 divisors (see below), whose sum is σ = 145000368. Its totient is φ = 139629880.

The previous prime is 142315097. The next prime is 142315133. The reversal of 142315123 is 321513241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321513241 = 7 ⋅45930463.

It is a cyclic number.

It is not a de Polignac number, because 142315123 - 2¹⁷ = 142184051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142315094 and 142315103.

It is not an unprimeable number, because it can be changed into a prime (142315133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1342543 + ... + 1342648.

It is an arithmetic number, because the mean of its divisors is an integer number (36250092).

Almost surely, 2^142315123 is an apocalyptic number.

142315123 is a deficient number, since it is larger than the sum of its proper divisors (2685245).

142315123 is an equidigital number, since it uses as much as digits as its factorization.

142315123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2685244.

The product of its digits is 720, while the sum is 22.

The square root of 142315123 is about 11929.5902276650. The cubic root of 142315123 is about 522.0959818709.

Adding to 142315123 its reverse (321513241), we get a palindrome (463828364).

The spelling of 142315123 in words is "one hundred forty-two million, three hundred fifteen thousand, one hundred twenty-three".