42231220544 has 56 divisors (see below), whose sum is σ = 86715478080. Its totient is φ = 20392694784.

The previous prime is 42231220519. The next prime is 42231220573. The reversal of 42231220544 is 44502213224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158717 + ... + 331139.

It is an arithmetic number, because the mean of its divisors is an integer number (1548490680).

Almost surely, 2^42231220544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42231220544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43357739040).

42231220544 is an abundant number, since it is smaller than the sum of its proper divisors (44484257536).

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

42231220544 is a wasteful number, since it uses less digits than its factorization.

42231220544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172567 (or 172557 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 42231220544 its reverse (44502213224), we get a palindrome (86733433768).

The spelling of 42231220544 in words is "forty-two billion, two hundred thirty-one million, two hundred twenty thousand, five hundred forty-four".