142531534 has 8 divisors (see below), whose sum is σ = 213891048. Its totient is φ = 71234520.

The previous prime is 142531531. The next prime is 142531567. The reversal of 142531534 is 435135241.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142531531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9432 + ... + 19339.

It is an arithmetic number, because the mean of its divisors is an integer number (26736381).

Almost surely, 2^142531534 is an apocalyptic number.

142531534 is a deficient number, since it is larger than the sum of its proper divisors (71359514).

142531534 is a wasteful number, since it uses less digits than its factorization.

142531534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31250.

The product of its digits is 7200, while the sum is 28.

The square root of 142531534 is about 11938.6571271647. The cubic root of 142531534 is about 522.3604889924.

Adding to 142531534 its reverse (435135241), we get a palindrome (577666775).

The spelling of 142531534 in words is "one hundred forty-two million, five hundred thirty-one thousand, five hundred thirty-four".