42020422 has 16 divisors (see below), whose sum is σ = 63898992. Its totient is φ = 20723040.

The previous prime is 42020393. The next prime is 42020437. The reversal of 42020422 is 22402024.

It is a junction number, because it is equal to n+sod(n) for n = 42020396 and 42020405.

It is a congruent number.

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, 50772 + ... + 51592.

It is an arithmetic number, because the mean of its divisors is an integer number (3993687).

Almost surely, 2^42020422 is an apocalyptic number.

42020422 is a deficient number, since it is larger than the sum of its proper divisors (21878570).

42020422 is a wasteful number, since it uses less digits than its factorization.

42020422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 42020422 is about 6482.3160984327. The cubic root of 42020422 is about 347.6589945788.

Adding to 42020422 its reverse (22402024), we get a palindrome (64422446).

The spelling of 42020422 in words is "forty-two million, twenty thousand, four hundred twenty-two".