42142220420 has 24 divisors (see below), whose sum is σ = 88511389848. Its totient is φ = 16854464000.

The previous prime is 42142220411. The next prime is 42142220437. The reversal of 42142220420 is 2402224124.

42142220420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5253640324 + 36888580096 = 72482^2 + 192064^2 .

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, 5531 + ... + 290370.

It is an arithmetic number, because the mean of its divisors is an integer number (3687974577).

Almost surely, 2^42142220420 is an apocalyptic number.

It is an amenable number.

42142220420 is an abundant number, since it is smaller than the sum of its proper divisors (46369169428).

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

42142220420 is a wasteful number, since it uses less digits than its factorization.

42142220420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303031 (or 303029 counting only the distinct ones).

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

Adding to 42142220420 its reverse (2402224124), we get a palindrome (44544444544).

The spelling of 42142220420 in words is "forty-two billion, one hundred forty-two million, two hundred twenty thousand, four hundred twenty".