42920025 has 24 divisors (see below), whose sum is σ = 71301984. Its totient is φ = 22780800.

The previous prime is 42920021. The next prime is 42920041. The reversal of 42920025 is 52002924.

42920025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42920025 - 2² = 42920021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42919977 and 42920004.

It is not an unprimeable number, because it can be changed into a prime (42920021) 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, 15765 + ... + 18285.

It is an arithmetic number, because the mean of its divisors is an integer number (2970916).

Almost surely, 2^42920025 is an apocalyptic number.

It is an amenable number.

42920025 is a deficient number, since it is larger than the sum of its proper divisors (28381959).

42920025 is a wasteful number, since it uses less digits than its factorization.

42920025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761 (or 2756 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 42920025 is about 6551.3376496712. The cubic root of 42920025 is about 350.1224741449.

Adding to 42920025 its reverse (52002924), we get a palindrome (94922949).

The spelling of 42920025 in words is "forty-two million, nine hundred twenty thousand, twenty-five".