1350805121 has 4 divisors (see below), whose sum is σ = 1367904000. Its totient is φ = 1333706244.

The previous prime is 1350805109. The next prime is 1350805189. The reversal of 1350805121 is 1215080531.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-1350805121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1350804121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8549321 + ... + 8549478.

It is an arithmetic number, because the mean of its divisors is an integer number (341976000).

Almost surely, 2^1350805121 is an apocalyptic number.

It is an amenable number.

1350805121 is a deficient number, since it is larger than the sum of its proper divisors (17098879).

1350805121 is an equidigital number, since it uses as much as digits as its factorization.

1350805121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17098878.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1350805121 is about 36753.3008177497. The cubic root of 1350805121 is about 1105.4291163828.

Adding to 1350805121 its reverse (1215080531), we get a palindrome (2565885652).

The spelling of 1350805121 in words is "one billion, three hundred fifty million, eight hundred five thousand, one hundred twenty-one".