3937642 has 16 divisors (see below), whose sum is σ = 6298560. Its totient is φ = 1839808.

The previous prime is 3937631. The next prime is 3937643. The reversal of 3937642 is 2467393.

3937642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 3937598 and 3937607.

It is not an unprimeable number, because it can be changed into a prime (3937643) 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 in 7 ways as a sum of consecutive naturals, for example, 5763 + ... + 6409.

It is an arithmetic number, because the mean of its divisors is an integer number (393660).

Almost surely, 2^3937642 is an apocalyptic number.

3937642 is a deficient number, since it is larger than the sum of its proper divisors (2360918).

3937642 is a wasteful number, since it uses less digits than its factorization.

3937642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845.

The product of its digits is 27216, while the sum is 34.

The square root of 3937642 is about 1984.3492636126. The cubic root of 3937642 is about 157.9108881685.

The spelling of 3937642 in words is "three million, nine hundred thirty-seven thousand, six hundred forty-two".