4223541 has 8 divisors (see below), whose sum is σ = 6435904. Its totient is φ = 2413440.

The previous prime is 4223539. The next prime is 4223543. The reversal of 4223541 is 1453224.

Added to its reverse (1453224) it gives a triangular number (5676765 = T₃₃₆₉).

It is an interprime number because it is at equal distance from previous prime (4223539) and next prime (4223543).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4223541 - 2¹ = 4223539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 201121 = 4223541 / (4 + 2 + 2 + 3 + 5 + 4 + 1).

It is an Ulam number.

It is a Duffinian number.

4223541 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4223543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100540 + ... + 100581.

It is an arithmetic number, because the mean of its divisors is an integer number (804488).

Almost surely, 2^4223541 is an apocalyptic number.

It is an amenable number.

4223541 is a deficient number, since it is larger than the sum of its proper divisors (2212363).

4223541 is a wasteful number, since it uses less digits than its factorization.

4223541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201131.

The product of its digits is 960, while the sum is 21.

The square root of 4223541 is about 2055.1255436104. The cubic root of 4223541 is about 161.6437454071.

Adding to 4223541 its reverse (1453224), we get a palindrome (5676765).

The spelling of 4223541 in words is "four million, two hundred twenty-three thousand, five hundred forty-one".