1303442666 has 16 divisors (see below), whose sum is σ = 2077556040. Its totient is φ = 611197440.

The previous prime is 1303442659. The next prime is 1303442669. The reversal of 1303442666 is 6662443031.

It can be written as a sum of positive squares in 4 ways, for example, as 1301117041 + 2325625 = 36071^2 + 1525^2 .

It is not an unprimeable number, because it can be changed into a prime (1303442669) 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 7 ways as a sum of consecutive naturals, for example, 58661 + ... + 77768.

Almost surely, 2^1303442666 is an apocalyptic number.

1303442666 is a deficient number, since it is larger than the sum of its proper divisors (774113374).

1303442666 is a wasteful number, since it uses less digits than its factorization.

1303442666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136729.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 1303442666 is about 36103.2223769569. Note that the first 3 decimals coincide. The cubic root of 1303442666 is about 1092.3554444307.

Adding to 1303442666 its reverse (6662443031), we get a palindrome (7965885697).

The spelling of 1303442666 in words is "one billion, three hundred three million, four hundred forty-two thousand, six hundred sixty-six".