136742258 has 8 divisors (see below), whose sum is σ = 207228252. Its totient is φ = 67666176.

The previous prime is 136742239. The next prime is 136742267. The reversal of 136742258 is 852247631.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 134954689 + 1787569 = 11617^2 + 1337^2 .

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

It is a Curzon number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 352235 + ... + 352622.

Almost surely, 2^136742258 is an apocalyptic number.

136742258 is a deficient number, since it is larger than the sum of its proper divisors (70485994).

136742258 is an equidigital number, since it uses as much as digits as its factorization.

136742258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704956.

The product of its digits is 80640, while the sum is 38.

The square root of 136742258 is about 11693.6845348248. The cubic root of 136742258 is about 515.1901870848.

Adding to 136742258 its reverse (852247631), we get a palindrome (988989889).

The spelling of 136742258 in words is "one hundred thirty-six million, seven hundred forty-two thousand, two hundred fifty-eight".