1243033141 has 4 divisors (see below), whose sum is σ = 1420609312. Its totient is φ = 1065456972.

The previous prime is 1243033117. The next prime is 1243033151. The reversal of 1243033141 is 1413303421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1413303421 = 367 ⋅3850963.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1243033141 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 (1243033151) 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, 88788075 + ... + 88788088.

It is an arithmetic number, because the mean of its divisors is an integer number (355152328).

Almost surely, 2^1243033141 is an apocalyptic number.

It is an amenable number.

1243033141 is a deficient number, since it is larger than the sum of its proper divisors (177576171).

1243033141 is an equidigital number, since it uses as much as digits as its factorization.

1243033141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177576170.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1243033141 is about 35256.6751268465. The cubic root of 1243033141 is about 1075.2123297191.

Adding to 1243033141 its reverse (1413303421), we get a palindrome (2656336562).

The spelling of 1243033141 in words is "one billion, two hundred forty-three million, thirty-three thousand, one hundred forty-one".