1321042300 has 18 divisors (see below), whose sum is σ = 2866662008. Its totient is φ = 528416880.

The previous prime is 1321042297. The next prime is 1321042309. The reversal of 1321042300 is 32401231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321042309) 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 5 ways as a sum of consecutive naturals, for example, 6605112 + ... + 6605311.

Almost surely, 2^1321042300 is an apocalyptic number.

1321042300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321042300 is an abundant number, since it is smaller than the sum of its proper divisors (1545619708).

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

1321042300 is a wasteful number, since it uses less digits than its factorization.

1321042300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13210437 (or 13210430 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1321042300 is about 36346.1456003247. The cubic root of 1321042300 is about 1097.2499624978.

Adding to 1321042300 its reverse (32401231), we get a palindrome (1353443531).

The spelling of 1321042300 in words is "one billion, three hundred twenty-one million, forty-two thousand, three hundred".