4021136 has 60 divisors (see below), whose sum is σ = 9499392. Its totient is φ = 1641024.

The previous prime is 4021099. The next prime is 4021151. The reversal of 4021136 is 6311204.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17921 + ... + 18143.

Almost surely, 2^4021136 is an apocalyptic number.

4021136 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4021136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4749696).

4021136 is an abundant number, since it is smaller than the sum of its proper divisors (5478256).

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

4021136 is a wasteful number, since it uses less digits than its factorization.

4021136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 4021136 is about 2005.2770382169. The cubic root of 4021136 is about 159.0192084174.

The spelling of 4021136 in words is "four million, twenty-one thousand, one hundred thirty-six".