1340041441 has 4 divisors (see below), whose sum is σ = 1340129584. Its totient is φ = 1339953300.

The previous prime is 1340041429. The next prime is 1340041471. The reversal of 1340041441 is 1441400431.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1340041441 - 2²⁷ = 1205823713 is a prime.

It is a super-2 number, since 2×1340041441² = 3591422127194712962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340041421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14775 + ... + 53836.

It is an arithmetic number, because the mean of its divisors is an integer number (335032396).

Almost surely, 2^1340041441 is an apocalyptic number.

It is an amenable number.

1340041441 is a deficient number, since it is larger than the sum of its proper divisors (88143).

1340041441 is an equidigital number, since it uses as much as digits as its factorization.

1340041441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88142.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1340041441 is about 36606.5764719948. The cubic root of 1340041441 is about 1102.4851364111.

Adding to 1340041441 its reverse (1441400431), we get a palindrome (2781441872).

The spelling of 1340041441 in words is "one billion, three hundred forty million, forty-one thousand, four hundred forty-one".