1332400321 has 24 divisors (see below), whose sum is σ = 1567260800. Its totient is φ = 1109572992.

The previous prime is 1332400301. The next prime is 1332400339. The reversal of 1332400321 is 1230042331.

It is a de Polignac number, because none of the positive numbers 2^k-1332400321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1332400301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3076921 + ... + 3077353.

Almost surely, 2^1332400321 is an apocalyptic number.

It is an amenable number.

1332400321 is a deficient number, since it is larger than the sum of its proper divisors (234860479).

1332400321 is an equidigital number, since it uses as much as digits as its factorization.

1332400321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1332400321 is about 36502.0591336982. The cubic root of 1332400321 is about 1100.3856281550.

Adding to 1332400321 its reverse (1230042331), we get a palindrome (2562442652).

The spelling of 1332400321 in words is "one billion, three hundred thirty-two million, four hundred thousand, three hundred twenty-one".