42044025 has 48 divisors (see below), whose sum is σ = 72564800. Its totient is φ = 21461760.

The previous prime is 42043993. The next prime is 42044047. The reversal of 42044025 is 52044024.

It is not a de Polignac number, because 42044025 - 2⁵ = 42043993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42043992 and 42044010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 302406 + ... + 302544.

Almost surely, 2^42044025 is an apocalyptic number.

It is an amenable number.

42044025 is a deficient number, since it is larger than the sum of its proper divisors (30520775).

42044025 is a wasteful number, since it uses less digits than its factorization.

42044025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 293 counting only the distinct ones).

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

The square root of 42044025 is about 6484.1364112733. The cubic root of 42044025 is about 347.7240761029.

Adding to 42044025 its reverse (52044024), we get a palindrome (94088049).

Subtracting 42044025 from its reverse (52044024), we obtain a palindrome (9999999).

The spelling of 42044025 in words is "forty-two million, forty-four thousand, twenty-five".