142134531 has 32 divisors (see below), whose sum is σ = 236929536. Its totient is φ = 73632000.

The previous prime is 142134491. The next prime is 142134547. The reversal of 142134531 is 135431241.

It is a happy number.

It is not a de Polignac number, because 142134531 - 2¹⁹ = 141610243 is a prime.

It is a super-2 number, since 2×142134531² = 40404449805179922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142134571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119761 + ... + 120941.

It is an arithmetic number, because the mean of its divisors is an integer number (7404048).

Almost surely, 2^142134531 is an apocalyptic number.

142134531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

142134531 is a deficient number, since it is larger than the sum of its proper divisors (94795005).

142134531 is a wasteful number, since it uses less digits than its factorization.

142134531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1723.

The product of its digits is 1440, while the sum is 24.

The square root of 142134531 is about 11922.0187468398. The cubic root of 142134531 is about 521.8750489966.

Adding to 142134531 its reverse (135431241), we get a palindrome (277565772).

The spelling of 142134531 in words is "one hundred forty-two million, one hundred thirty-four thousand, five hundred thirty-one".