1306442120 has 16 divisors (see below), whose sum is σ = 2939494860. Its totient is φ = 522576832.

The previous prime is 1306442119. The next prime is 1306442143. The reversal of 1306442120 is 212446031.

It can be written as a sum of positive squares in 2 ways, for example, as 1214243716 + 92198404 = 34846^2 + 9602^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16330487 + ... + 16330566.

Almost surely, 2^1306442120 is an apocalyptic number.

1306442120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1306442120 is an abundant number, since it is smaller than the sum of its proper divisors (1633052740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1306442120 is a wasteful number, since it uses less digits than its factorization.

1306442120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32661064 (or 32661060 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1306442120 is about 36144.7384829383. The cubic root of 1306442120 is about 1093.1927040851.

Adding to 1306442120 its reverse (212446031), we get a palindrome (1518888151).

The spelling of 1306442120 in words is "one billion, three hundred six million, four hundred forty-two thousand, one hundred twenty".