142858523 has 4 divisors (see below), whose sum is σ = 145200528. Its totient is φ = 140516520.

The previous prime is 142858519. The next prime is 142858567. The reversal of 142858523 is 325858241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142858523 - 2² = 142858519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142858423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170911 + ... + 1171032.

It is an arithmetic number, because the mean of its divisors is an integer number (36300132).

Almost surely, 2^142858523 is an apocalyptic number.

142858523 is a deficient number, since it is larger than the sum of its proper divisors (2342005).

142858523 is an equidigital number, since it uses as much as digits as its factorization.

142858523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342004.

The product of its digits is 76800, while the sum is 38.

The square root of 142858523 is about 11952.3438287225. The cubic root of 142858523 is about 522.7596420242.

The spelling of 142858523 in words is "one hundred forty-two million, eight hundred fifty-eight thousand, five hundred twenty-three".