42550422 has 16 divisors (see below), whose sum is σ = 90106992. Its totient is φ = 13349120.

The previous prime is 42550421. The next prime is 42550447. The reversal of 42550422 is 22405524.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42550392 and 42550401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42550421) 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, 208479 + ... + 208682.

It is an arithmetic number, because the mean of its divisors is an integer number (5631687).

Almost surely, 2^42550422 is an apocalyptic number.

42550422 is an abundant number, since it is smaller than the sum of its proper divisors (47556570).

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

42550422 is a wasteful number, since it uses less digits than its factorization.

42550422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417183.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 42550422 is about 6523.0684497405. The cubic root of 42550422 is about 349.1145564173.

Adding to 42550422 its reverse (22405524), we get a palindrome (64955946).

The spelling of 42550422 in words is "forty-two million, five hundred fifty thousand, four hundred twenty-two".