4166642 has 4 divisors (see below), whose sum is σ = 6249966. Its totient is φ = 2083320.

The previous prime is 4166641. The next prime is 4166647. The reversal of 4166642 is 2466614.

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., 4165681 + 961 = 2041^2 + 31^2 .

It is not an unprimeable number, because it can be changed into a prime (4166641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1041659 + ... + 1041662.

Almost surely, 2^4166642 is an apocalyptic number.

4166642 is a deficient number, since it is larger than the sum of its proper divisors (2083324).

4166642 is a wasteful number, since it uses less digits than its factorization.

4166642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083323.

The product of its digits is 6912, while the sum is 29.

The square root of 4166642 is about 2041.2354102357. The cubic root of 4166642 is about 160.9145798949.

The spelling of 4166642 in words is "four million, one hundred sixty-six thousand, six hundred forty-two".