1326120137 has 4 divisors (see below), whose sum is σ = 1327724496. Its totient is φ = 1324515780.

The previous prime is 1326120127. The next prime is 1326120161. The reversal of 1326120137 is 7310216231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1326120137 - 2⁶ = 1326120073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326120127) by changing a digit.

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, 800939 + ... + 802592.

It is an arithmetic number, because the mean of its divisors is an integer number (331931124).

Almost surely, 2^1326120137 is an apocalyptic number.

It is an amenable number.

1326120137 is a deficient number, since it is larger than the sum of its proper divisors (1604359).

1326120137 is an equidigital number, since it uses as much as digits as its factorization.

1326120137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604358.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1326120137 is about 36415.9324609435. The cubic root of 1326120137 is about 1098.6540388763.

Adding to 1326120137 its reverse (7310216231), we get a palindrome (8636336368).

The spelling of 1326120137 in words is "one billion, three hundred twenty-six million, one hundred twenty thousand, one hundred thirty-seven".