135842993 has 8 divisors (see below), whose sum is σ = 159591936. Its totient is φ = 113994000.

The previous prime is 135842983. The next prime is 135843007. The reversal of 135842993 is 399248531.

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

It is a cyclic number.

It is not a de Polignac number, because 135842993 - 2¹⁴ = 135826609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135842983) 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 in 7 ways as a sum of consecutive naturals, for example, 474833 + ... + 475118.

It is an arithmetic number, because the mean of its divisors is an integer number (19948992).

Almost surely, 2^135842993 is an apocalyptic number.

135842993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

135842993 is a deficient number, since it is larger than the sum of its proper divisors (23748943).

135842993 is a wasteful number, since it uses less digits than its factorization.

135842993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949975.

The product of its digits is 233280, while the sum is 44.

The square root of 135842993 is about 11655.1702261271. The cubic root of 135842993 is about 514.0583452570.

The spelling of 135842993 in words is "one hundred thirty-five million, eight hundred forty-two thousand, nine hundred ninety-three".