1332516421 has 8 divisors (see below), whose sum is σ = 1339579800. Its totient is φ = 1325464320.

The previous prime is 1332516401. The next prime is 1332516443. The reversal of 1332516421 is 1246152331.

It can be written as a sum of positive squares in 4 ways, for example, as 218625796 + 1113890625 = 14786^2 + 33375^2 .

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 1332516421 - 2⁹ = 1332515909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1332516421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1332516401) 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, 337185 + ... + 341113.

It is an arithmetic number, because the mean of its divisors is an integer number (167447475).

Almost surely, 2^1332516421 is an apocalyptic number.

It is an amenable number.

1332516421 is a deficient number, since it is larger than the sum of its proper divisors (7063379).

1332516421 is a wasteful number, since it uses less digits than its factorization.

1332516421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5639.

The product of its digits is 4320, while the sum is 28.

The square root of 1332516421 is about 36503.6494202977. The cubic root of 1332516421 is about 1100.4175882846.

Adding to 1332516421 its reverse (1246152331), we get a palindrome (2578668752).

The spelling of 1332516421 in words is "one billion, three hundred thirty-two million, five hundred sixteen thousand, four hundred twenty-one".