1140240343 has 4 divisors (see below), whose sum is σ = 1243898568. Its totient is φ = 1036582120.

The previous prime is 1140240323. The next prime is 1140240373. The reversal of 1140240343 is 3430420411.

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 1140240343 - 2²¹ = 1138143191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140240323) 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, 51829096 + ... + 51829117.

It is an arithmetic number, because the mean of its divisors is an integer number (310974642).

Almost surely, 2^1140240343 is an apocalyptic number.

1140240343 is a deficient number, since it is larger than the sum of its proper divisors (103658225).

1140240343 is a wasteful number, since it uses less digits than its factorization.

1140240343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103658224.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1140240343 is about 33767.4450173536. The cubic root of 1140240343 is about 1044.7173347793.

Adding to 1140240343 its reverse (3430420411), we get a palindrome (4570660754).

The spelling of 1140240343 in words is "one billion, one hundred forty million, two hundred forty thousand, three hundred forty-three".