142143523 has 2 divisors, whose sum is σ = 142143524. Its totient is φ = 142143522.

The previous prime is 142143517. The next prime is 142143539. The reversal of 142143523 is 325341241.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142143523 is a prime.

It is a super-2 number, since 2×142143523² = 40409562261703058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142143593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71071761 + 71071762.

It is an arithmetic number, because the mean of its divisors is an integer number (71071762).

Almost surely, 2^142143523 is an apocalyptic number.

142143523 is a deficient number, since it is larger than the sum of its proper divisors (1).

142143523 is an equidigital number, since it uses as much as digits as its factorization.

142143523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 142143523 is about 11922.3958582157. The cubic root of 142143523 is about 521.8860540668.

Adding to 142143523 its reverse (325341241), we get a palindrome (467484764).

It can be divided in two parts, 1421 and 43523, that added together give a palindrome (44944).

The spelling of 142143523 in words is "one hundred forty-two million, one hundred forty-three thousand, five hundred twenty-three".