42084925 has 6 divisors (see below), whose sum is σ = 52185338. Its totient is φ = 33667920.

The previous prime is 42084923. The next prime is 42084941. The reversal of 42084925 is 52948024.

It can be written as a sum of positive squares in 3 ways, for example, as 9114361 + 32970564 = 3019^2 + 5742^2 .

It is not a de Polignac number, because 42084925 - 2¹ = 42084923 is a prime.

It is a super-2 number, since 2×42084925² = 3542281824511250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42084923) 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 5 ways as a sum of consecutive naturals, for example, 841674 + ... + 841723.

Almost surely, 2^42084925 is an apocalyptic number.

It is an amenable number.

42084925 is a deficient number, since it is larger than the sum of its proper divisors (10100413).

42084925 is a wasteful number, since it uses less digits than its factorization.

42084925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683407 (or 1683402 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 42084925 is about 6487.2894956214. The cubic root of 42084925 is about 347.8367937091.

The spelling of 42084925 in words is "forty-two million, eighty-four thousand, nine hundred twenty-five".