142808523 has 16 divisors (see below), whose sum is σ = 223700736. Its totient is φ = 79892640.

The previous prime is 142808509. The next prime is 142808539. The reversal of 142808523 is 325808241.

It is not a de Polignac number, because 142808523 - 2⁴ = 142808507 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (142808543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166015 + ... + 166872.

It is an arithmetic number, because the mean of its divisors is an integer number (13981296).

Almost surely, 2^142808523 is an apocalyptic number.

142808523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142808523 is a deficient number, since it is larger than the sum of its proper divisors (80892213).

142808523 is a wasteful number, since it uses less digits than its factorization.

142808523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332914.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 142808523 is about 11950.2520057110. The cubic root of 142808523 is about 522.6986468719.

The spelling of 142808523 in words is "one hundred forty-two million, eight hundred eight thousand, five hundred twenty-three".