42443442 has 12 divisors (see below), whose sum is σ = 91960830. Its totient is φ = 14147808.

The previous prime is 42443437. The next prime is 42443449. The reversal of 42443442 is 24434424.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 38675961 + 3767481 = 6219^2 + 1941^2 .

It is not an unprimeable number, because it can be changed into a prime (42443449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1178967 + ... + 1179002.

Almost surely, 2^42443442 is an apocalyptic number.

42443442 is an abundant number, since it is smaller than the sum of its proper divisors (49517388).

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

42443442 is a wasteful number, since it uses less digits than its factorization.

42443442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357977 (or 2357974 counting only the distinct ones).

The product of its digits is 12288, while the sum is 27.

The square root of 42443442 is about 6514.8631604969. The cubic root of 42443442 is about 348.8217303414.

Adding to 42443442 its reverse (24434424), we get a palindrome (66877866).

The spelling of 42443442 in words is "forty-two million, four hundred forty-three thousand, four hundred forty-two".