142523143 has 4 divisors (see below), whose sum is σ = 162883600. Its totient is φ = 122162688.

The previous prime is 142523131. The next prime is 142523177. The reversal of 142523143 is 341325241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 341325241 = 4987 ⋅68443.

It is a cyclic number.

It is not a de Polignac number, because 142523143 - 2¹⁷ = 142392071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142523243) 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, 10180218 + ... + 10180231.

It is an arithmetic number, because the mean of its divisors is an integer number (40720900).

Almost surely, 2^142523143 is an apocalyptic number.

142523143 is a deficient number, since it is larger than the sum of its proper divisors (20360457).

142523143 is an equidigital number, since it uses as much as digits as its factorization.

142523143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20360456.

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

The square root of 142523143 is about 11938.3057005590. The cubic root of 142523143 is about 522.3502381313.

Adding to 142523143 its reverse (341325241), we get a palindrome (483848384).

The spelling of 142523143 in words is "one hundred forty-two million, five hundred twenty-three thousand, one hundred forty-three".