1340440204 has 24 divisors (see below), whose sum is σ = 2483102160. Its totient is φ = 632057664.

The previous prime is 1340440151. The next prime is 1340440229. The reversal of 1340440204 is 4020440431.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 129379 + ... + 139354.

It is an arithmetic number, because the mean of its divisors is an integer number (103462590).

Almost surely, 2^1340440204 is an apocalyptic number.

It is an amenable number.

1340440204 is a deficient number, since it is larger than the sum of its proper divisors (1142661956).

1340440204 is a wasteful number, since it uses less digits than its factorization.

1340440204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268809 (or 268807 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1340440204 is about 36612.0226701558. The cubic root of 1340440204 is about 1102.5944829498.

Adding to 1340440204 its reverse (4020440431), we get a palindrome (5360880635).

The spelling of 1340440204 in words is "one billion, three hundred forty million, four hundred forty thousand, two hundred four".