42012044420 has 48 divisors (see below), whose sum is σ = 91544038320. Its totient is φ = 16182042624.

The previous prime is 42012044419. The next prime is 42012044429. The reversal of 42012044420 is 2444021024.

It can be written as a sum of positive squares in 8 ways, for example, as 10131227716 + 31880816704 = 100654^2 + 178552^2 .

It is not an unprimeable number, because it can be changed into a prime (42012044429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220865 + ... + 364424.

It is an arithmetic number, because the mean of its divisors is an integer number (1907167465).

Almost surely, 2^42012044420 is an apocalyptic number.

It is an amenable number.

42012044420 is an abundant number, since it is smaller than the sum of its proper divisors (49531993900).

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

42012044420 is a wasteful number, since it uses less digits than its factorization.

42012044420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585432 (or 585430 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 42012044420 its reverse (2444021024), we get a palindrome (44456065444).

The spelling of 42012044420 in words is "forty-two billion, twelve million, forty-four thousand, four hundred twenty".