135543143 has 4 divisors (see below), whose sum is σ = 135585768. Its totient is φ = 135500520.

The previous prime is 135543113. The next prime is 135543151. The reversal of 135543143 is 341345531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135543143 - 2¹⁴ = 135526759 is a prime.

It is a super-2 number, since 2×135543143² = 36743887228636898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135543103) 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, 16121 + ... + 23042.

It is an arithmetic number, because the mean of its divisors is an integer number (33896442).

Almost surely, 2^135543143 is an apocalyptic number.

135543143 is a deficient number, since it is larger than the sum of its proper divisors (42625).

135543143 is an equidigital number, since it uses as much as digits as its factorization.

135543143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42624.

The product of its digits is 10800, while the sum is 29.

The square root of 135543143 is about 11642.2997298644. The cubic root of 135543143 is about 513.6798348815.

Adding to 135543143 its reverse (341345531), we get a palindrome (476888674).

The spelling of 135543143 in words is "one hundred thirty-five million, five hundred forty-three thousand, one hundred forty-three".