3666242 has 4 divisors (see below), whose sum is σ = 5499366. Its totient is φ = 1833120.

The previous prime is 3666241. The next prime is 3666251. The reversal of 3666242 is 2426663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2426663 = 1361 ⋅1783.

It can be written as a sum of positive squares in only one way, i.e., 3613801 + 52441 = 1901^2 + 229^2 .

It is not an unprimeable number, because it can be changed into a prime (3666241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 916559 + ... + 916562.

Almost surely, 2^3666242 is an apocalyptic number.

3666242 is a deficient number, since it is larger than the sum of its proper divisors (1833124).

3666242 is a wasteful number, since it uses less digits than its factorization.

3666242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833123.

The product of its digits is 10368, while the sum is 29.

The square root of 3666242 is about 1914.7433248350. The cubic root of 3666242 is about 154.1962136047.

The spelling of 3666242 in words is "three million, six hundred sixty-six thousand, two hundred forty-two".