404221143 has 8 divisors (see below), whose sum is σ = 567328000. Its totient is φ = 255297528.

The previous prime is 404221123. The next prime is 404221157. The reversal of 404221143 is 341122404.

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

It is not a de Polignac number, because 404221143 - 2⁶ = 404221079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404221123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3545743 + ... + 3545856.

It is an arithmetic number, because the mean of its divisors is an integer number (70916000).

Almost surely, 2^404221143 is an apocalyptic number.

404221143 is a deficient number, since it is larger than the sum of its proper divisors (163106857).

404221143 is a wasteful number, since it uses less digits than its factorization.

404221143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7091621.

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

The square root of 404221143 is about 20105.2516273734. The cubic root of 404221143 is about 739.3890397878.

Adding to 404221143 its reverse (341122404), we get a palindrome (745343547).

The spelling of 404221143 in words is "four hundred four million, two hundred twenty-one thousand, one hundred forty-three".