4042925 has 6 divisors (see below), whose sum is σ = 5013258. Its totient is φ = 3234320.

The previous prime is 4042901. The next prime is 4042933. The reversal of 4042925 is 5292404.

It can be written as a sum of positive squares in 3 ways, for example, as 635209 + 3407716 = 797^2 + 1846^2 .

It is not a de Polignac number, because 4042925 - 2¹² = 4038829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4042894 and 4042903.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 80834 + ... + 80883.

It is an arithmetic number, because the mean of its divisors is an integer number (835543).

Almost surely, 2^4042925 is an apocalyptic number.

It is an amenable number.

4042925 is a deficient number, since it is larger than the sum of its proper divisors (970333).

4042925 is a wasteful number, since it uses less digits than its factorization.

4042925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161727 (or 161722 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4042925 is about 2010.7026135160. The cubic root of 4042925 is about 159.3059126419.

The spelling of 4042925 in words is "four million, forty-two thousand, nine hundred twenty-five".