1142005666 has 8 divisors (see below), whose sum is σ = 1759306140. Its totient is φ = 555570288.

The previous prime is 1142005663. The next prime is 1142005673. The reversal of 1142005666 is 6665002411.

It can be written as a sum of positive squares in 2 ways, for example, as 1140480441 + 1525225 = 33771^2 + 1235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1142005666² = 2608353882352207112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1142005663) by changing a digit.

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, 7716181 + ... + 7716328.

Almost surely, 2^1142005666 is an apocalyptic number.

1142005666 is a deficient number, since it is larger than the sum of its proper divisors (617300474).

1142005666 is a wasteful number, since it uses less digits than its factorization.

1142005666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15432548.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1142005666 is about 33793.5743300409. The cubic root of 1142005666 is about 1045.2562014619.

The spelling of 1142005666 in words is "one billion, one hundred forty-two million, five thousand, six hundred sixty-six".