1066211642 has 8 divisors (see below), whose sum is σ = 1638325332. Its totient is φ = 520103200.

The previous prime is 1066211639. The next prime is 1066211659. The reversal of 1066211642 is 2461126601.

It can be written as a sum of positive squares in 2 ways, for example, as 1064651641 + 1560001 = 32629^2 + 1249^2 .

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

It is a super-2 number, since 2×1066211642² = 2273614531072672328, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6501209 + ... + 6501372.

Almost surely, 2^1066211642 is an apocalyptic number.

1066211642 is a deficient number, since it is larger than the sum of its proper divisors (572113690).

1066211642 is a wasteful number, since it uses less digits than its factorization.

1066211642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13002624.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1066211642 is about 32652.8963799538. The cubic root of 1066211642 is about 1021.6006018215.

The spelling of 1066211642 in words is "one billion, sixty-six million, two hundred eleven thousand, six hundred forty-two".