42004450 has 24 divisors (see below), whose sum is σ = 82725732. Its totient is φ = 15813120.

The previous prime is 42004439. The next prime is 42004451. The reversal of 42004450 is 5440024.

42004450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 32524209 + 9480241 = 5703^2 + 3079^2 .

It is not an unprimeable number, because it can be changed into a prime (42004451) by changing a digit.

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 in 11 ways as a sum of consecutive naturals, for example, 23859 + ... + 25558.

Almost surely, 2^42004450 is an apocalyptic number.

42004450 is a deficient number, since it is larger than the sum of its proper divisors (40721282).

42004450 is a wasteful number, since it uses less digits than its factorization.

42004450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49446 (or 49441 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 42004450 is about 6481.0840142680. The cubic root of 42004450 is about 347.6149404984.

Adding to 42004450 its reverse (5440024), we get a palindrome (47444474).

The spelling of 42004450 in words is "forty-two million, four thousand, four hundred fifty".