1321235004 has 48 divisors (see below), whose sum is σ = 3259984896. Its totient is φ = 415804800.

The previous prime is 1321234997. The next prime is 1321235009. The reversal of 1321235004 is 4005321231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321235009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28062 + ... + 58565.

It is an arithmetic number, because the mean of its divisors is an integer number (67916352).

Almost surely, 2^1321235004 is an apocalyptic number.

It is an amenable number.

1321235004 is an abundant number, since it is smaller than the sum of its proper divisors (1938749892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321235004 is a wasteful number, since it uses less digits than its factorization.

1321235004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86706 (or 86704 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1321235004 is about 36348.7964587550. The cubic root of 1321235004 is about 1097.3033128400.

Adding to 1321235004 its reverse (4005321231), we get a palindrome (5326556235).

The spelling of 1321235004 in words is "one billion, three hundred twenty-one million, two hundred thirty-five thousand, four".