1326020105 has 4 divisors (see below), whose sum is σ = 1591224132. Its totient is φ = 1060816080.

The previous prime is 1326020063. The next prime is 1326020117. The reversal of 1326020105 is 5010206231.

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 200618896 + 1125401209 = 14164^2 + 33547^2 .

It is not a de Polignac number, because 1326020105 - 2¹² = 1326016009 is a prime.

It is a super-2 number, since 2×1326020105² = 3516658637728422050, which contains 22 as substring.

It is a Duffinian 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, 132602006 + ... + 132602015.

It is an arithmetic number, because the mean of its divisors is an integer number (397806033).

Almost surely, 2^1326020105 is an apocalyptic number.

It is an amenable number.

1326020105 is a deficient number, since it is larger than the sum of its proper divisors (265204027).

1326020105 is an equidigital number, since it uses as much as digits as its factorization.

1326020105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265204026.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1326020105 is about 36414.5589702800. The cubic root of 1326020105 is about 1098.6264135953.

Adding to 1326020105 its reverse (5010206231), we get a palindrome (6336226336).

The spelling of 1326020105 in words is "one billion, three hundred twenty-six million, twenty thousand, one hundred five".