424144232220 has 48 divisors (see below), whose sum is σ = 1228555712160. Its totient is φ = 109204951296.

The previous prime is 424144232207. The next prime is 424144232231. The reversal of 424144232220 is 22232441424.

It is a happy number.

It is a super-2 number, since 2×424144232220² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121878787 + ... + 121882266.

It is an arithmetic number, because the mean of its divisors is an integer number (25594910670).

Almost surely, 2^424144232220 is an apocalyptic number.

It is an amenable number.

424144232220 is an abundant number, since it is smaller than the sum of its proper divisors (804411479940).

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

424144232220 is a wasteful number, since it uses less digits than its factorization.

424144232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243761094 (or 243761092 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 424144232220 its reverse (22232441424), we get a palindrome (446376673644).

The spelling of 424144232220 in words is "four hundred twenty-four billion, one hundred forty-four million, two hundred thirty-two thousand, two hundred twenty".