136544242 has 8 divisors (see below), whose sum is σ = 204931116. Its totient is φ = 68233872.

The previous prime is 136544197. The next prime is 136544249. The reversal of 136544242 is 242445631.

It can be written as a sum of positive squares in 2 ways, for example, as 133379401 + 3164841 = 11549^2 + 1779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (136544249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14433 + ... + 21940.

Almost surely, 2^136544242 is an apocalyptic number.

136544242 is a deficient number, since it is larger than the sum of its proper divisors (68386874).

136544242 is a wasteful number, since it uses less digits than its factorization.

136544242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38252.

The product of its digits is 23040, while the sum is 31.

The square root of 136544242 is about 11685.2146749643. The cubic root of 136544242 is about 514.9413852290.

Adding to 136544242 its reverse (242445631), we get a palindrome (378989873).

The spelling of 136544242 in words is "one hundred thirty-six million, five hundred forty-four thousand, two hundred forty-two".