3821742 has 40 divisors (see below), whose sum is σ = 8851392. Its totient is φ = 1231200.

The previous prime is 3821737. The next prime is 3821771. The reversal of 3821742 is 2471283.

3821742 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 (27).

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 19 ways as a sum of consecutive naturals, for example, 4642 + ... + 5402.

Almost surely, 2^3821742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3821742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4425696).

3821742 is an abundant number, since it is smaller than the sum of its proper divisors (5029650).

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

3821742 is a wasteful number, since it uses less digits than its factorization.

3821742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806 (or 797 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 3821742 is about 1954.9276201435. The cubic root of 3821742 is about 156.3461249585.

The spelling of 3821742 in words is "three million, eight hundred twenty-one thousand, seven hundred forty-two".