135630142 has 4 divisors (see below), whose sum is σ = 203445216. Its totient is φ = 67815070.

The previous prime is 135630139. The next prime is 135630169. The reversal of 135630142 is 241036531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241036531 = 1667 ⋅144593.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33907534 + ... + 33907537.

It is an arithmetic number, because the mean of its divisors is an integer number (50861304).

Almost surely, 2^135630142 is an apocalyptic number.

135630142 is a deficient number, since it is larger than the sum of its proper divisors (67815074).

135630142 is an equidigital number, since it uses as much as digits as its factorization.

135630142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67815073.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 135630142 is about 11646.0354627659. The cubic root of 135630142 is about 513.7897139772.

Adding to 135630142 its reverse (241036531), we get a palindrome (376666673).

The spelling of 135630142 in words is "one hundred thirty-five million, six hundred thirty thousand, one hundred forty-two".