4021217382 has 64 divisors (see below), whose sum is σ = 9957878784. Its totient is φ = 1054166400.

The previous prime is 4021217381. The next prime is 4021217419. The reversal of 4021217382 is 2837121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021217381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69132 + ... + 113232.

It is an arithmetic number, because the mean of its divisors is an integer number (155591856).

Almost surely, 2^4021217382 is an apocalyptic number.

4021217382 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 4021217382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4978939392).

4021217382 is an abundant number, since it is smaller than the sum of its proper divisors (5936661402).

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

4021217382 is a wasteful number, since it uses less digits than its factorization.

4021217382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44293.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 4021217382 is about 63413.0694888680. The cubic root of 4021217382 is about 1590.2028118335.

Adding to 4021217382 its reverse (2837121204), we get a palindrome (6858338586).

The spelling of 4021217382 in words is "four billion, twenty-one million, two hundred seventeen thousand, three hundred eighty-two".