1340403041 has 4 divisors (see below), whose sum is σ = 1340524800. Its totient is φ = 1340281284.

The previous prime is 1340403007. The next prime is 1340403049. The reversal of 1340403041 is 1403040431.

It is a happy number.

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 1340403041 - 2³⁰ = 266661217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340403049) 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, 42521 + ... + 66998.

It is an arithmetic number, because the mean of its divisors is an integer number (335131200).

Almost surely, 2^1340403041 is an apocalyptic number.

It is an amenable number.

1340403041 is a deficient number, since it is larger than the sum of its proper divisors (121759).

1340403041 is a wasteful number, since it uses less digits than its factorization.

1340403041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121758.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1340403041 is about 36611.5151420970. The cubic root of 1340403041 is about 1102.5842932382.

Adding to 1340403041 its reverse (1403040431), we get a palindrome (2743443472).

The spelling of 1340403041 in words is "one billion, three hundred forty million, four hundred three thousand, forty-one".