1340100543 has 16 divisors (see below), whose sum is σ = 1871767296. Its totient is φ = 851220480.

The previous prime is 1340100491. The next prime is 1340100551. The reversal of 1340100543 is 3450010431.

It is not a de Polignac number, because 1340100543 - 2⁸ = 1340100287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340100583) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20053 + ... + 55518.

It is an arithmetic number, because the mean of its divisors is an integer number (116985456).

Almost surely, 2^1340100543 is an apocalyptic number.

1340100543 is a deficient number, since it is larger than the sum of its proper divisors (531666753).

1340100543 is a wasteful number, since it uses less digits than its factorization.

1340100543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75854.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1340100543 is about 36607.3837224132. The cubic root of 1340100543 is about 1102.5013443970.

Adding to 1340100543 its reverse (3450010431), we get a palindrome (4790110974).

The spelling of 1340100543 in words is "one billion, three hundred forty million, one hundred thousand, five hundred forty-three".