1243132413 has 4 divisors (see below), whose sum is σ = 1657509888. Its totient is φ = 828754940.

The previous prime is 1243132393. The next prime is 1243132421. The reversal of 1243132413 is 3142313421.

It is a happy number.

1243132413 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 1243132413 - 2⁶ = 1243132349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243132613) 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, 207188733 + ... + 207188738.

It is an arithmetic number, because the mean of its divisors is an integer number (414377472).

Almost surely, 2^1243132413 is an apocalyptic number.

It is an amenable number.

1243132413 is a deficient number, since it is larger than the sum of its proper divisors (414377475).

1243132413 is an equidigital number, since it uses as much as digits as its factorization.

1243132413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414377474.

The product of its digits is 1728, while the sum is 24.

The square root of 1243132413 is about 35258.0829456169. The cubic root of 1243132413 is about 1075.2409520820.

Adding to 1243132413 its reverse (3142313421), we get a palindrome (4385445834).

It can be divided in two parts, 12431 and 32413, that added together give a palindrome (44844).

The spelling of 1243132413 in words is "one billion, two hundred forty-three million, one hundred thirty-two thousand, four hundred thirteen".