1344400243 has 4 divisors (see below), whose sum is σ = 1344473728. Its totient is φ = 1344326760.

The previous prime is 1344400237. The next prime is 1344400249. The reversal of 1344400243 is 3420044431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (1344400237) and next prime (1344400249).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1344400243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1344400249) 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, 14830 + ... + 53932.

It is an arithmetic number, because the mean of its divisors is an integer number (336118432).

Almost surely, 2^1344400243 is an apocalyptic number.

1344400243 is a deficient number, since it is larger than the sum of its proper divisors (73485).

1344400243 is an equidigital number, since it uses as much as digits as its factorization.

1344400243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73484.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1344400243 is about 36666.0639147427. The cubic root of 1344400243 is about 1103.6792073077.

Adding to 1344400243 its reverse (3420044431), we get a palindrome (4764444674).

The spelling of 1344400243 in words is "one billion, three hundred forty-four million, four hundred thousand, two hundred forty-three".