1320421332 has 24 divisors (see below), whose sum is σ = 3087050400. Its totient is φ = 439273696.

The previous prime is 1320421309. The next prime is 1320421343. The reversal of 1320421332 is 2331240231.

It is a junction number, because it is equal to n+sod(n) for n = 1320421299 and 1320421308.

It is a congruent 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, 101982 + ... + 114197.

It is an arithmetic number, because the mean of its divisors is an integer number (128627100).

Almost surely, 2^1320421332 is an apocalyptic number.

1320421332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1320421332 is an abundant number, since it is smaller than the sum of its proper divisors (1766629068).

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

1320421332 is a wasteful number, since it uses less digits than its factorization.

1320421332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216695 (or 216693 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1320421332 is about 36337.6021773589. The cubic root of 1320421332 is about 1097.0780114301.

Adding to 1320421332 its reverse (2331240231), we get a palindrome (3651661563).

The spelling of 1320421332 in words is "one billion, three hundred twenty million, four hundred twenty-one thousand, three hundred thirty-two".