136023642 has 24 divisors (see below), whose sum is σ = 295113780. Its totient is φ = 45280320.

The previous prime is 136023631. The next prime is 136023649. The reversal of 136023642 is 246320631.

136023642 is a `hidden beast` number, since 13 + 6 + 0 + 2 + 3 + 642 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 134304921 + 1718721 = 11589^2 + 1311^2 .

It is not an unprimeable number, because it can be changed into a prime (136023649) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 9892 + ... + 19232.

Almost surely, 2^136023642 is an apocalyptic number.

136023642 is an abundant number, since it is smaller than the sum of its proper divisors (159090138).

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

136023642 is a wasteful number, since it uses less digits than its factorization.

136023642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10158 (or 10155 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 136023642 is about 11662.9173880295. The cubic root of 136023642 is about 514.2861155420.

The spelling of 136023642 in words is "one hundred thirty-six million, twenty-three thousand, six hundred forty-two".