42440522 has 4 divisors (see below), whose sum is σ = 63660786. Its totient is φ = 21220260.

The previous prime is 42440423. The next prime is 42440537. The reversal of 42440522 is 22504424.

42440522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42367081 + 73441 = 6509^2 + 271^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610129 + ... + 10610132.

Almost surely, 2^42440522 is an apocalyptic number.

42440522 is a deficient number, since it is larger than the sum of its proper divisors (21220264).

42440522 is a wasteful number, since it uses less digits than its factorization.

42440522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21220263.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 42440522 is about 6514.6390537005. The cubic root of 42440522 is about 348.8137308110.

Adding to 42440522 its reverse (22504424), we get a palindrome (64944946).

The spelling of 42440522 in words is "forty-two million, four hundred forty thousand, five hundred twenty-two".