4023142221 has 64 divisors (see below), whose sum is σ = 6616608768. Its totient is φ = 2124638208.

The previous prime is 4023142181. The next prime is 4023142223. The reversal of 4023142221 is 1222413204.

It is not a de Polignac number, because 4023142221 - 2⁹ = 4023141709 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023142223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2013595 + ... + 2015591.

It is an arithmetic number, because the mean of its divisors is an integer number (103384512).

Almost surely, 2^4023142221 is an apocalyptic number.

It is an amenable number.

4023142221 is a deficient number, since it is larger than the sum of its proper divisors (2593466547).

4023142221 is a wasteful number, since it uses less digits than its factorization.

4023142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 4023142221 is about 63428.2446627683. The cubic root of 4023142221 is about 1590.4564991993.

Adding to 4023142221 its reverse (1222413204), we get a palindrome (5245555425).

The spelling of 4023142221 in words is "four billion, twenty-three million, one hundred forty-two thousand, two hundred twenty-one".