7042066 has 4 divisors (see below), whose sum is σ = 10563102. Its totient is φ = 3521032.

The previous prime is 7042051. The next prime is 7042069. The reversal of 7042066 is 6602407.

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., 4223025 + 2819041 = 2055^2 + 1679^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7042066.

It is not an unprimeable number, because it can be changed into a prime (7042069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760515 + ... + 1760518.

Almost surely, 2^7042066 is an apocalyptic number.

7042066 is a deficient number, since it is larger than the sum of its proper divisors (3521036).

7042066 is a wasteful number, since it uses less digits than its factorization.

7042066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521035.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 7042066 is about 2653.6891302487. The cubic root of 7042066 is about 191.6755406939.

The spelling of 7042066 in words is "seven million, forty-two thousand, sixty-six".