42020226842 has 12 divisors (see below), whose sum is σ = 69281283498. Its totient is φ = 19100103000.

The previous prime is 42020226841. The next prime is 42020226847. The reversal of 42020226842 is 24862202024.

It can be written as a sum of positive squares in only one way, i.e., 30401758321 + 11618468521 = 174361^2 + 107789^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42020226799 and 42020226808.

It is not an unprimeable number, because it can be changed into a prime (42020226841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86818409 + ... + 86818892.

Almost surely, 2^42020226842 is an apocalyptic number.

42020226842 is a deficient number, since it is larger than the sum of its proper divisors (27261056656).

42020226842 is a wasteful number, since it uses less digits than its factorization.

42020226842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173637325 (or 173637314 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 42020226842 its reverse (24862202024), we get a palindrome (66882428866).

It can be divided in two parts, 42020 and 226842, that added together give a palindrome (268862).

The spelling of 42020226842 in words is "forty-two billion, twenty million, two hundred twenty-six thousand, eight hundred forty-two".