1105243143 has 8 divisors (see below), whose sum is σ = 1474368000. Its totient is φ = 736473528.

The previous prime is 1105243133. The next prime is 1105243159. The reversal of 1105243143 is 3413425011.

It is a happy number.

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

It is not a de Polignac number, because 1105243143 - 2¹³ = 1105234951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105243103) 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, 81463 + ... + 94056.

It is an arithmetic number, because the mean of its divisors is an integer number (184296000).

Almost surely, 2^1105243143 is an apocalyptic number.

1105243143 is a deficient number, since it is larger than the sum of its proper divisors (369124857).

1105243143 is a wasteful number, since it uses less digits than its factorization.

1105243143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177621.

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

The square root of 1105243143 is about 33245.1972922406. The cubic root of 1105243143 is about 1033.9176353300.

Adding to 1105243143 its reverse (3413425011), we get a palindrome (4518668154).

The spelling of 1105243143 in words is "one billion, one hundred five million, two hundred forty-three thousand, one hundred forty-three".