1340404022 has 8 divisors (see below), whose sum is σ = 2014451976. Its totient is φ = 668920032.

The previous prime is 1340403989. The next prime is 1340404063. The reversal of 1340404022 is 2204040431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1340403985 and 1340404003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639683 + ... + 641774.

It is an arithmetic number, because the mean of its divisors is an integer number (251806497).

Almost surely, 2^1340404022 is an apocalyptic number.

1340404022 is a deficient number, since it is larger than the sum of its proper divisors (674047954).

1340404022 is a wasteful number, since it uses less digits than its factorization.

1340404022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281982.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1340404022 is about 36611.5285395188. The cubic root of 1340404022 is about 1102.5845622207.

Adding to 1340404022 its reverse (2204040431), we get a palindrome (3544444453).

The spelling of 1340404022 in words is "one billion, three hundred forty million, four hundred four thousand, twenty-two".