44421142420 has 24 divisors (see below), whose sum is σ = 93288825000. Its totient is φ = 17767613952.

The previous prime is 44421142373. The next prime is 44421142427. The reversal of 44421142420 is 2424112444.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2557527184 + 41863615236 = 50572^2 + 204606^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44421142427) 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, 544456 + ... + 620704.

It is an arithmetic number, because the mean of its divisors is an integer number (3887034375).

Almost surely, 2^44421142420 is an apocalyptic number.

It is an amenable number.

44421142420 is an abundant number, since it is smaller than the sum of its proper divisors (48867682580).

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

44421142420 is a wasteful number, since it uses less digits than its factorization.

44421142420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105387 (or 105385 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 44421142420 its reverse (2424112444), we get a palindrome (46845254864).

The spelling of 44421142420 in words is "forty-four billion, four hundred twenty-one million, one hundred forty-two thousand, four hundred twenty".