42004425 has 24 divisors (see below), whose sum is σ = 69926080. Its totient is φ = 22248000.

The previous prime is 42004423. The next prime is 42004427. The reversal of 42004425 is 52440024.

42004425 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42004423) and next prime (42004427).

It is not a de Polignac number, because 42004425 - 2¹ = 42004423 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42004423) 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 23 ways as a sum of consecutive naturals, for example, 9471 + ... + 13179.

Almost surely, 2^42004425 is an apocalyptic number.

It is an amenable number.

42004425 is a deficient number, since it is larger than the sum of its proper divisors (27921655).

42004425 is a wasteful number, since it uses less digits than its factorization.

42004425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3873 (or 3868 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 42004425 is about 6481.0820855780. The cubic root of 42004425 is about 347.6148715345.

Adding to 42004425 its reverse (52440024), we get a palindrome (94444449).

The spelling of 42004425 in words is "forty-two million, four thousand, four hundred twenty-five".