1232540243 has 6 divisors (see below), whose sum is σ = 1354775772. Its totient is φ = 1120491020.

The previous prime is 1232540227. The next prime is 1232540251. The reversal of 1232540243 is 3420452321.

It is not a de Polignac number, because 1232540243 - 2⁴ = 1232540227 is a prime.

It is a super-2 number, since 2×1232540243² = 3038310901228998098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232540143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5093021 + ... + 5093262.

It is an arithmetic number, because the mean of its divisors is an integer number (225795962).

Almost surely, 2^1232540243 is an apocalyptic number.

1232540243 is a deficient number, since it is larger than the sum of its proper divisors (122235529).

1232540243 is a wasteful number, since it uses less digits than its factorization.

1232540243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10186305 (or 10186294 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 1232540243 is about 35107.5525065476. The cubic root of 1232540243 is about 1072.1783563207.

Adding to 1232540243 its reverse (3420452321), we get a palindrome (4652992564).

The spelling of 1232540243 in words is "one billion, two hundred thirty-two million, five hundred forty thousand, two hundred forty-three".