136553642 has 4 divisors (see below), whose sum is σ = 204830466. Its totient is φ = 68276820.

The previous prime is 136553623. The next prime is 136553647. The reversal of 136553642 is 246355631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 116402521 + 20151121 = 10789^2 + 4489^2 .

It is not an unprimeable number, because it can be changed into a prime (136553647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34138409 + ... + 34138412.

Almost surely, 2^136553642 is an apocalyptic number.

136553642 is a deficient number, since it is larger than the sum of its proper divisors (68276824).

136553642 is an equidigital number, since it uses as much as digits as its factorization.

136553642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68276823.

The product of its digits is 64800, while the sum is 35.

The square root of 136553642 is about 11685.6168857275. The cubic root of 136553642 is about 514.9532015162.

The spelling of 136553642 in words is "one hundred thirty-six million, five hundred fifty-three thousand, six hundred forty-two".