1201140543 has 8 divisors (see below), whose sum is σ = 1638765568. Its totient is φ = 782137944.

The previous prime is 1201140541. The next prime is 1201140547. The reversal of 1201140543 is 3450411021.

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

It is not a de Polignac number, because 1201140543 - 2¹ = 1201140541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201140541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4655455 + ... + 4655712.

It is an arithmetic number, because the mean of its divisors is an integer number (204845696).

Almost surely, 2^1201140543 is an apocalyptic number.

1201140543 is a deficient number, since it is larger than the sum of its proper divisors (437625025).

1201140543 is an equidigital number, since it uses as much as digits as its factorization.

1201140543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9311213.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1201140543 is about 34657.4745617738. The cubic root of 1201140543 is about 1062.9951314076.

Adding to 1201140543 its reverse (3450411021), we get a palindrome (4651551564).

The spelling of 1201140543 in words is "one billion, two hundred one million, one hundred forty thousand, five hundred forty-three".