135142836 has 12 divisors (see below), whose sum is σ = 315333312. Its totient is φ = 45047608.

The previous prime is 135142829. The next prime is 135142883. The reversal of 135142836 is 638241531.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×135142836² = 36527172244245792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135142797 and 135142806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5630940 + ... + 5630963.

It is an arithmetic number, because the mean of its divisors is an integer number (26277776).

Almost surely, 2^135142836 is an apocalyptic number.

It is an amenable number.

135142836 is an abundant number, since it is smaller than the sum of its proper divisors (180190476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135142836 is a wasteful number, since it uses less digits than its factorization.

135142836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11261910 (or 11261908 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 135142836 is about 11625.0950963852. The cubic root of 135142836 is about 513.1736432873.

The spelling of 135142836 in words is "one hundred thirty-five million, one hundred forty-two thousand, eight hundred thirty-six".