135743842 has 16 divisors (see below), whose sum is σ = 220583160. Its totient is φ = 62648976.

The previous prime is 135743831. The next prime is 135743851. The reversal of 135743842 is 248347531.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2595321 + 133148521 = 1611^2 + 11539^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 11053 + ... + 19840.

Almost surely, 2^135743842 is an apocalyptic number.

135743842 is a deficient number, since it is larger than the sum of its proper divisors (84839318).

135743842 is an equidigital number, since it uses as much as digits as its factorization.

135743842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30934 (or 30908 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 135743842 is about 11650.9159296598. The cubic root of 135743842 is about 513.9332454300.

The spelling of 135743842 in words is "one hundred thirty-five million, seven hundred forty-three thousand, eight hundred forty-two".