142537823 has 4 divisors (see below), whose sum is σ = 142561728. Its totient is φ = 142513920.

The previous prime is 142537817. The next prime is 142537841. The reversal of 142537823 is 328735241.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 328735241 = 1987 ⋅165443.

It is a cyclic number.

It is not a de Polignac number, because 142537823 - 2²² = 138343519 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 (142537873) 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, 5138 + ... + 17648.

It is an arithmetic number, because the mean of its divisors is an integer number (35640432).

Almost surely, 2^142537823 is an apocalyptic number.

142537823 is a deficient number, since it is larger than the sum of its proper divisors (23905).

142537823 is a wasteful number, since it uses less digits than its factorization.

142537823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23904.

The product of its digits is 40320, while the sum is 35.

The square root of 142537823 is about 11938.9205123411. The cubic root of 142537823 is about 522.3681716825.

The spelling of 142537823 in words is "one hundred forty-two million, five hundred thirty-seven thousand, eight hundred twenty-three".