136568142 has 36 divisors (see below), whose sum is σ = 300975480. Its totient is φ = 44754480.

The previous prime is 136568141. The next prime is 136568149. The reversal of 136568142 is 241865631.

It is a happy number.

136568142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 136568097 and 136568106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136568141) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 65959 + ... + 67997.

It is an arithmetic number, because the mean of its divisors is an integer number (8360430).

Almost surely, 2^136568142 is an apocalyptic number.

136568142 is an abundant number, since it is smaller than the sum of its proper divisors (164407338).

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

136568142 is a wasteful number, since it uses less digits than its factorization.

136568142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169 (or 2105 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 136568142 is about 11686.2372900776. The cubic root of 136568142 is about 514.9714277044.

The spelling of 136568142 in words is "one hundred thirty-six million, five hundred sixty-eight thousand, one hundred forty-two".