135422173 has 2 divisors, whose sum is σ = 135422174. Its totient is φ = 135422172.

The previous prime is 135422159. The next prime is 135422197. The reversal of 135422173 is 371224531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110292004 + 25130169 = 10502^2 + 5013^2 .

It is a cyclic number.

It is not a de Polignac number, because 135422173 - 2²¹ = 133325021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135422123) 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, 67711086 + 67711087.

It is an arithmetic number, because the mean of its divisors is an integer number (67711087).

Almost surely, 2^135422173 is an apocalyptic number.

It is an amenable number.

135422173 is a deficient number, since it is larger than the sum of its proper divisors (1).

135422173 is an equidigital number, since it uses as much as digits as its factorization.

135422173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 28.

The square root of 135422173 is about 11637.1032907679. The cubic root of 135422173 is about 513.5269724947.

The spelling of 135422173 in words is "one hundred thirty-five million, four hundred twenty-two thousand, one hundred seventy-three".