1243140003 has 12 divisors (see below), whose sum is σ = 2052167728. Its totient is φ = 710365680.

The previous prime is 1243140001. The next prime is 1243140061. The reversal of 1243140003 is 3000413421.

It is not a de Polignac number, because 1243140003 - 2¹ = 1243140001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243140001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9866128 + ... + 9866253.

Almost surely, 2^1243140003 is an apocalyptic number.

1243140003 is a deficient number, since it is larger than the sum of its proper divisors (809027725).

1243140003 is a wasteful number, since it uses less digits than its factorization.

1243140003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19732394 (or 19732391 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1243140003 is about 35258.1905803460. The cubic root of 1243140003 is about 1075.2431403880.

Adding to 1243140003 its reverse (3000413421), we get a palindrome (4243553424).

It can be divided in two parts, 1243 and 140003, that added together give a triangular number (141246 = T₅₃₁).

The spelling of 1243140003 in words is "one billion, two hundred forty-three million, one hundred forty thousand, three".