1321204132 has 24 divisors (see below), whose sum is σ = 2331044352. Its totient is φ = 655214400.

The previous prime is 1321204061. The next prime is 1321204163. The reversal of 1321204132 is 2314021231.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249957 + ... + 255187.

It is an arithmetic number, because the mean of its divisors is an integer number (97126848).

Almost surely, 2^1321204132 is an apocalyptic number.

It is an amenable number.

1321204132 is a deficient number, since it is larger than the sum of its proper divisors (1009840220).

1321204132 is a wasteful number, since it uses less digits than its factorization.

1321204132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5739 (or 5737 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1321204132 is about 36348.3717929703. The cubic root of 1321204132 is about 1097.2947662374.

Adding to 1321204132 its reverse (2314021231), we get a palindrome (3635225363).

The spelling of 1321204132 in words is "one billion, three hundred twenty-one million, two hundred four thousand, one hundred thirty-two".