142499523 has 8 divisors (see below), whose sum is σ = 190123200. Its totient is φ = 94937768.

The previous prime is 142499521. The next prime is 142499537. The reversal of 142499523 is 325994241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142499523 - 2¹ = 142499521 is a prime.

It is a super-2 number, since 2×142499523² = 40612228110455058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142499521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9813 + ... + 19526.

It is an arithmetic number, because the mean of its divisors is an integer number (23765400).

Almost surely, 2^142499523 is an apocalyptic number.

142499523 is a deficient number, since it is larger than the sum of its proper divisors (47623677).

142499523 is a wasteful number, since it uses less digits than its factorization.

142499523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30961.

The product of its digits is 77760, while the sum is 39.

The square root of 142499523 is about 11937.3164069652. The cubic root of 142499523 is about 522.3213806092.

The spelling of 142499523 in words is "one hundred forty-two million, four hundred ninety-nine thousand, five hundred twenty-three".