4021350 has 96 divisors (see below), whose sum is σ = 11249280. Its totient is φ = 944640.

The previous prime is 4021349. The next prime is 4021357. The reversal of 4021350 is 531204.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021357) 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 47 ways as a sum of consecutive naturals, for example, 48409 + ... + 48491.

It is an arithmetic number, because the mean of its divisors is an integer number (117180).

Almost surely, 2^4021350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4021350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5624640).

4021350 is an abundant number, since it is smaller than the sum of its proper divisors (7227930).

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

4021350 is a wasteful number, since it uses less digits than its factorization.

4021350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 4021350 is about 2005.3303967177. The cubic root of 4021350 is about 159.0220293040.

Adding to 4021350 its reverse (531204), we get a palindrome (4552554).

It can be divided in two parts, 4021 and 350, that added together give a triangular number (4371 = T₉₃).

The spelling of 4021350 in words is "four million, twenty-one thousand, three hundred fifty".