1320332421 has 8 divisors (see below), whose sum is σ = 1863998784. Its totient is φ = 828443840.

The previous prime is 1320332417. The next prime is 1320332423. The reversal of 1320332421 is 1242330231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1320332421 - 2² = 1320332417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320332423) 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, 12944385 + ... + 12944486.

It is an arithmetic number, because the mean of its divisors is an integer number (232999848).

Almost surely, 2^1320332421 is an apocalyptic number.

It is an amenable number.

1320332421 is a deficient number, since it is larger than the sum of its proper divisors (543666363).

1320332421 is a wasteful number, since it uses less digits than its factorization.

1320332421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25888891.

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

The square root of 1320332421 is about 36336.3787546310. The cubic root of 1320332421 is about 1097.0533868424.

Adding to 1320332421 its reverse (1242330231), we get a palindrome (2562662652).

The spelling of 1320332421 in words is "one billion, three hundred twenty million, three hundred thirty-two thousand, four hundred twenty-one".