143540505243 has 80 divisors (see below), whose sum is σ = 220405933440. Its totient is φ = 93070041984.

The previous prime is 143540505239. The next prime is 143540505287. The reversal of 143540505243 is 342505045341.

143540505243 is a `hidden beast` number, since 1 + 4 + 3 + 5 + 405 + 0 + 5 + 243 = 666.

It is not a de Polignac number, because 143540505243 - 2² = 143540505239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143540505198 and 143540505207.

It is not an unprimeable number, because it can be changed into a prime (143540505203) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 194235768 + ... + 194236506.

It is an arithmetic number, because the mean of its divisors is an integer number (2755074168).

Almost surely, 2^143540505243 is an apocalyptic number.

143540505243 is a deficient number, since it is larger than the sum of its proper divisors (76865428197).

143540505243 is a wasteful number, since it uses less digits than its factorization.

143540505243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238 (or 1229 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

The spelling of 143540505243 in words is "one hundred forty-three billion, five hundred forty million, five hundred five thousand, two hundred forty-three".