3971242 has 8 divisors (see below), whose sum is σ = 6498432. Its totient is φ = 1805100.

The previous prime is 3971239. The next prime is 3971257. The reversal of 3971242 is 2421793.

3971242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a d-powerful number, because it can be written as 3⁶ + 9³ + 7⁷ + 1 + 2⁹ + 4¹⁰ + 2²¹ .

It is a self number, because there is not a number n which added to its sum of digits gives 3971242.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 90234 + ... + 90277.

It is an arithmetic number, because the mean of its divisors is an integer number (812304).

Almost surely, 2^3971242 is an apocalyptic number.

3971242 is a deficient number, since it is larger than the sum of its proper divisors (2527190).

3971242 is a wasteful number, since it uses less digits than its factorization.

3971242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180524.

The product of its digits is 3024, while the sum is 28.

The square root of 3971242 is about 1992.7975311105. The cubic root of 3971242 is about 158.3587691977.

The spelling of 3971242 in words is "three million, nine hundred seventy-one thousand, two hundred forty-two".