1321150145 has 16 divisors (see below), whose sum is σ = 1812695808. Its totient is φ = 905515200.

The previous prime is 1321150111. The next prime is 1321150147. The reversal of 1321150145 is 5410511231.

It is not a de Polignac number, because 1321150145 - 2¹² = 1321146049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321150145.

It is not an unprimeable number, because it can be changed into a prime (1321150147) 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 15 ways as a sum of consecutive naturals, for example, 81887 + ... + 96683.

It is an arithmetic number, because the mean of its divisors is an integer number (113293488).

Almost surely, 2^1321150145 is an apocalyptic number.

It is an amenable number.

1321150145 is a deficient number, since it is larger than the sum of its proper divisors (491545663).

1321150145 is a wasteful number, since it uses less digits than its factorization.

1321150145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17360.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1321150145 is about 36347.6291523945. The cubic root of 1321150145 is about 1097.2798201595.

Adding to 1321150145 its reverse (5410511231), we get a palindrome (6731661376).

The spelling of 1321150145 in words is "one billion, three hundred twenty-one million, one hundred fifty thousand, one hundred forty-five".