3938142 has 32 divisors (see below), whose sum is σ = 8779680. Its totient is φ = 1169280.

The previous prime is 3938141. The next prime is 3938153. The reversal of 3938142 is 2418393.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3938141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1392 + ... + 3132.

It is an arithmetic number, because the mean of its divisors is an integer number (274365).

Almost surely, 2^3938142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3938142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4389840).

3938142 is an abundant number, since it is smaller than the sum of its proper divisors (4841538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3938142 is a wasteful number, since it uses less digits than its factorization.

3938142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788.

The product of its digits is 5184, while the sum is 30.

The square root of 3938142 is about 1984.4752454994. The cubic root of 3938142 is about 157.9175717033.

The spelling of 3938142 in words is "three million, nine hundred thirty-eight thousand, one hundred forty-two".