1206234543 has 4 divisors (see below), whose sum is σ = 1608312728. Its totient is φ = 804156360.

The previous prime is 1206234539. The next prime is 1206234559. The reversal of 1206234543 is 3454326021.

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

It is not a de Polignac number, because 1206234543 - 2² = 1206234539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1206234543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206234343) 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, 201039088 + ... + 201039093.

It is an arithmetic number, because the mean of its divisors is an integer number (402078182).

Almost surely, 2^1206234543 is an apocalyptic number.

1206234543 is a deficient number, since it is larger than the sum of its proper divisors (402078185).

1206234543 is an equidigital number, since it uses as much as digits as its factorization.

1206234543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402078184.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 1206234543 is about 34730.8874490705. The cubic root of 1206234543 is about 1064.4957219398.

The spelling of 1206234543 in words is "one billion, two hundred six million, two hundred thirty-four thousand, five hundred forty-three".