1340244401 has 8 divisors (see below), whose sum is σ = 1428643200. Its totient is φ = 1253631600.

The previous prime is 1340244397. The next prime is 1340244457. The reversal of 1340244401 is 1044420431.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1340244401 - 2² = 1340244397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1340244461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444950 + ... + 447951.

It is an arithmetic number, because the mean of its divisors is an integer number (178580400).

Almost surely, 2^1340244401 is an apocalyptic number.

It is an amenable number.

1340244401 is a deficient number, since it is larger than the sum of its proper divisors (88398799).

1340244401 is an equidigital number, since it uses as much as digits as its factorization.

1340244401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892999.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1340244401 is about 36609.3485465120. The cubic root of 1340244401 is about 1102.5407936668.

Adding to 1340244401 its reverse (1044420431), we get a palindrome (2384664832).

The spelling of 1340244401 in words is "one billion, three hundred forty million, two hundred forty-four thousand, four hundred one".