1332020405 has 4 divisors (see below), whose sum is σ = 1598424492. Its totient is φ = 1065616320.

The previous prime is 1332020359. The next prime is 1332020429. The reversal of 1332020405 is 5040202331.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 924707281 + 407313124 = 30409^2 + 20182^2 .

It is not a de Polignac number, because 1332020405 - 2¹⁸ = 1331758261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133202036 + ... + 133202045.

It is an arithmetic number, because the mean of its divisors is an integer number (399606123).

Almost surely, 2^1332020405 is an apocalyptic number.

It is an amenable number.

1332020405 is a deficient number, since it is larger than the sum of its proper divisors (266404087).

1332020405 is an equidigital number, since it uses as much as digits as its factorization.

1332020405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266404086.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 1332020405 is about 36496.8547274967. The cubic root of 1332020405 is about 1100.2810315008.

Adding to 1332020405 its reverse (5040202331), we get a palindrome (6372222736).

The spelling of 1332020405 in words is "one billion, three hundred thirty-two million, twenty thousand, four hundred five".