1066421344 has 24 divisors (see below), whose sum is σ = 2114630280. Its totient is φ = 529372416.

The previous prime is 1066421333. The next prime is 1066421387. The reversal of 1066421344 is 4431246601.

It is a super-2 number, since 2×1066421344² = 2274508965877532672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115429 + ... + 124324.

It is an arithmetic number, because the mean of its divisors is an integer number (88109595).

Almost surely, 2^1066421344 is an apocalyptic number.

It is an amenable number.

1066421344 is a deficient number, since it is larger than the sum of its proper divisors (1048208936).

1066421344 is a wasteful number, since it uses less digits than its factorization.

1066421344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239902 (or 239894 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 1066421344 is about 32656.1073001667. The cubic root of 1066421344 is about 1021.6675734050.

Adding to 1066421344 its reverse (4431246601), we get a palindrome (5497667945).

The spelling of 1066421344 in words is "one billion, sixty-six million, four hundred twenty-one thousand, three hundred forty-four".