42242144020 has 24 divisors (see below), whose sum is σ = 89011274184. Its totient is φ = 16839186816.

The previous prime is 42242143997. The next prime is 42242144023. The reversal of 42242144020 is 2044124224.

It can be written as a sum of positive squares in 4 ways, for example, as 8564021764 + 33678122256 = 92542^2 + 183516^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42242144023) 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, 3598419 + ... + 3610138.

It is an arithmetic number, because the mean of its divisors is an integer number (3708803091).

Almost surely, 2^42242144020 is an apocalyptic number.

It is an amenable number.

42242144020 is an abundant number, since it is smaller than the sum of its proper divisors (46769130164).

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

42242144020 is a wasteful number, since it uses less digits than its factorization.

42242144020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208859 (or 7208857 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 42242144020 its reverse (2044124224), we get a palindrome (44286268244).

The spelling of 42242144020 in words is "forty-two billion, two hundred forty-two million, one hundred forty-four thousand, twenty".