1340242441 has 4 divisors (see below), whose sum is σ = 1340316432. Its totient is φ = 1340168452.

The previous prime is 1340242439. The next prime is 1340242457. The reversal of 1340242441 is 1442420431.

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 1340242441 - 2¹ = 1340242439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340242411) 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, 10506 + ... + 52828.

It is an arithmetic number, because the mean of its divisors is an integer number (335079108).

Almost surely, 2^1340242441 is an apocalyptic number.

It is an amenable number.

1340242441 is a deficient number, since it is larger than the sum of its proper divisors (73991).

1340242441 is an equidigital number, since it uses as much as digits as its factorization.

1340242441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73990.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1340242441 is about 36609.3217773834. The cubic root of 1340242441 is about 1102.5402562074.

Adding to 1340242441 its reverse (1442420431), we get a palindrome (2782662872).

The spelling of 1340242441 in words is "one billion, three hundred forty million, two hundred forty-two thousand, four hundred forty-one".