3945742 has 16 divisors (see below), whose sum is σ = 6377472. Its totient is φ = 1825560.

The previous prime is 3945731. The next prime is 3945757. The reversal of 3945742 is 2475493.

3945742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3945698 and 3945707.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 43 + ... + 2809.

It is an arithmetic number, because the mean of its divisors is an integer number (398592).

Almost surely, 2^3945742 is an apocalyptic number.

3945742 is a deficient number, since it is larger than the sum of its proper divisors (2431730).

3945742 is a wasteful number, since it uses less digits than its factorization.

3945742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2823.

The product of its digits is 30240, while the sum is 34.

The square root of 3945742 is about 1986.3891864385. The cubic root of 3945742 is about 158.0190918552.

The spelling of 3945742 in words is "three million, nine hundred forty-five thousand, seven hundred forty-two".