135242842 has 16 divisors (see below), whose sum is σ = 236577600. Its totient is φ = 57960924.

The previous prime is 135242791. The next prime is 135242873. The reversal of 135242842 is 248242531.

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, 97888 + ... + 99259.

It is an arithmetic number, because the mean of its divisors is an integer number (14786100).

Almost surely, 2^135242842 is an apocalyptic number.

135242842 is a deficient number, since it is larger than the sum of its proper divisors (101334758).

135242842 is an equidigital number, since it uses as much as digits as its factorization.

135242842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197170 (or 197156 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 135242842 is about 11629.3955990842. The cubic root of 135242842 is about 513.3001952897.

The spelling of 135242842 in words is "one hundred thirty-five million, two hundred forty-two thousand, eight hundred forty-two".