1320402150 has 144 divisors (see below), whose sum is σ = 3753219600. Its totient is φ = 331879680.

The previous prime is 1320402133. The next prime is 1320402151. The reversal of 1320402150 is 512040231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320402151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3325752 + ... + 3326148.

It is an arithmetic number, because the mean of its divisors is an integer number (26064025).

Almost surely, 2^1320402150 is an apocalyptic number.

1320402150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320402150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1876609800).

1320402150 is an abundant number, since it is smaller than the sum of its proper divisors (2432817450).

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

1320402150 is a wasteful number, since it uses less digits than its factorization.

1320402150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823 (or 815 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1320402150 is about 36337.3382349340. The cubic root of 1320402150 is about 1097.0726989207.

Adding to 1320402150 its reverse (512040231), we get a palindrome (1832442381).

The spelling of 1320402150 in words is "one billion, three hundred twenty million, four hundred two thousand, one hundred fifty".