142486531 has 8 divisors (see below), whose sum is σ = 155635200. Its totient is φ = 129370440.

The previous prime is 142486523. The next prime is 142486543. The reversal of 142486531 is 135684241.

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 142486531 - 2³ = 142486523 is a prime.

It is a super-2 number, since 2×142486531² = 40604823032827922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142486031) 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, 1510 + ... + 16948.

It is an arithmetic number, because the mean of its divisors is an integer number (19454400).

Almost surely, 2^142486531 is an apocalyptic number.

142486531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142486531 is a deficient number, since it is larger than the sum of its proper divisors (13148669).

142486531 is a wasteful number, since it uses less digits than its factorization.

142486531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16289.

The product of its digits is 23040, while the sum is 34.

The square root of 142486531 is about 11936.7722186527. The cubic root of 142486531 is about 522.3055063908.

The spelling of 142486531 in words is "one hundred forty-two million, four hundred eighty-six thousand, five hundred thirty-one".