1321342004 has 24 divisors (see below), whose sum is σ = 2436604800. Its totient is φ = 625242240.

The previous prime is 1321342003. The next prime is 1321342007. The reversal of 1321342004 is 4002431231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321342003) 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, 68069 + ... + 85299.

It is an arithmetic number, because the mean of its divisors is an integer number (101525200).

Almost surely, 2^1321342004 is an apocalyptic number.

It is an amenable number.

1321342004 is a deficient number, since it is larger than the sum of its proper divisors (1115262796).

1321342004 is a wasteful number, since it uses less digits than its factorization.

1321342004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18263 (or 18261 counting only the distinct ones).

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

The square root of 1321342004 is about 36350.2682796152. The cubic root of 1321342004 is about 1097.3329336833.

Adding to 1321342004 its reverse (4002431231), we get a palindrome (5323773235).

The spelling of 1321342004 in words is "one billion, three hundred twenty-one million, three hundred forty-two thousand, four".