42016425 has 24 divisors (see below), whose sum is σ = 75783840. Its totient is φ = 20371200.

The previous prime is 42016421. The next prime is 42016433. The reversal of 42016425 is 52461024.

It is not a de Polignac number, because 42016425 - 2² = 42016421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42016395 and 42016404.

It is not an unprimeable number, because it can be changed into a prime (42016421) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 24640 + ... + 26289.

It is an arithmetic number, because the mean of its divisors is an integer number (3157660).

Almost surely, 2^42016425 is an apocalyptic number.

It is an amenable number.

42016425 is a deficient number, since it is larger than the sum of its proper divisors (33767415).

42016425 is a wasteful number, since it uses less digits than its factorization.

42016425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50953 (or 50948 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 42016425 is about 6482.0077908006. The cubic root of 42016425 is about 347.6479710733.

Adding to 42016425 its reverse (52461024), we get a palindrome (94477449).

The spelling of 42016425 in words is "forty-two million, sixteen thousand, four hundred twenty-five".