135800043 has 8 divisors (see below), whose sum is σ = 181237056. Its totient is φ = 90448200.

The previous prime is 135800009. The next prime is 135800047. The reversal of 135800043 is 340008531.

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

It is not a de Polignac number, because 135800043 - 2¹⁰ = 135799019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135799986 and 135800022.

It is not an unprimeable number, because it can be changed into a prime (135800047) 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, 17473 + ... + 24018.

It is an arithmetic number, because the mean of its divisors is an integer number (22654632).

Almost surely, 2^135800043 is an apocalyptic number.

135800043 is a deficient number, since it is larger than the sum of its proper divisors (45437013).

135800043 is a wasteful number, since it uses less digits than its factorization.

135800043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42585.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 135800043 is about 11653.3275505325. The cubic root of 135800043 is about 514.0041622801.

Adding to 135800043 its reverse (340008531), we get a palindrome (475808574).

The spelling of 135800043 in words is "one hundred thirty-five million, eight hundred thousand, forty-three".