1066132642 has 4 divisors (see below), whose sum is σ = 1599198966. Its totient is φ = 533066320.

The previous prime is 1066132637. The next prime is 1066132649. The reversal of 1066132642 is 2462316601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1028420761 + 37711881 = 32069^2 + 6141^2 .

It is a super-2 number, since 2×1066132642² = 2273277620675800328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1066132649) 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 as a sum of consecutive naturals, namely, 266533159 + ... + 266533162.

Almost surely, 2^1066132642 is an apocalyptic number.

1066132642 is a deficient number, since it is larger than the sum of its proper divisors (533066324).

1066132642 is an equidigital number, since it uses as much as digits as its factorization.

1066132642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533066323.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 1066132642 is about 32651.6866639382. The cubic root of 1066132642 is about 1021.5753696700.

The spelling of 1066132642 in words is "one billion, sixty-six million, one hundred thirty-two thousand, six hundred forty-two".