142531135 has 8 divisors (see below), whose sum is σ = 171108720. Its totient is φ = 113977344.

The previous prime is 142531093. The next prime is 142531157. The reversal of 142531135 is 531135241.

It is a happy number.

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 142531135 - 2⁷ = 142531007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12364 + ... + 20926.

It is an arithmetic number, because the mean of its divisors is an integer number (21388590).

Almost surely, 2^142531135 is an apocalyptic number.

142531135 is a deficient number, since it is larger than the sum of its proper divisors (28577585).

142531135 is an equidigital number, since it uses as much as digits as its factorization.

142531135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11897.

The product of its digits is 1800, while the sum is 25.

The square root of 142531135 is about 11938.6404167309. The cubic root of 142531135 is about 522.3600015634.

Adding to 142531135 its reverse (531135241), we get a palindrome (673666376).

The spelling of 142531135 in words is "one hundred forty-two million, five hundred thirty-one thousand, one hundred thirty-five".