1321243010 has 16 divisors (see below), whose sum is σ = 2381731776. Its totient is φ = 527720688.

The previous prime is 1321242997. The next prime is 1321243013. The reversal of 1321243010 is 103421231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321243010.

It is not an unprimeable number, because it can be changed into a prime (1321243013) 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 7 ways as a sum of consecutive naturals, for example, 89894 + ... + 103553.

It is an arithmetic number, because the mean of its divisors is an integer number (148858236).

Almost surely, 2^1321243010 is an apocalyptic number.

1321243010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321243010 is a deficient number, since it is larger than the sum of its proper divisors (1060488766).

1321243010 is a wasteful number, since it uses less digits than its factorization.

1321243010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194137.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1321243010 is about 36348.9065860309. The cubic root of 1321243010 is about 1097.3055291988.

Adding to 1321243010 its reverse (103421231), we get a palindrome (1424664241).

The spelling of 1321243010 in words is "one billion, three hundred twenty-one million, two hundred forty-three thousand, ten".