135781226 has 8 divisors (see below), whose sum is σ = 232767840. Its totient is φ = 58191948.

The previous prime is 135781223. The next prime is 135781249. The reversal of 135781226 is 622187531.

It is a happy number.

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 (135781223) 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, 4849316 + ... + 4849343.

It is an arithmetic number, because the mean of its divisors is an integer number (29095980).

Almost surely, 2^135781226 is an apocalyptic number.

135781226 is a deficient number, since it is larger than the sum of its proper divisors (96986614).

135781226 is an equidigital number, since it uses as much as digits as its factorization.

135781226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9698668.

The product of its digits is 20160, while the sum is 35.

The square root of 135781226 is about 11652.5201566013. The cubic root of 135781226 is about 513.9804203557.

The spelling of 135781226 in words is "one hundred thirty-five million, seven hundred eighty-one thousand, two hundred twenty-six".