42084725 has 12 divisors (see below), whose sum is σ = 53596644. Its totient is φ = 32757120.

The previous prime is 42084697. The next prime is 42084727. The reversal of 42084725 is 52748024.

It can be written as a sum of positive squares in 6 ways, for example, as 391876 + 41692849 = 626^2 + 6457^2 .

It is not a de Polignac number, because 42084725 - 2⁶ = 42084661 is a prime.

It is a super-2 number, since 2×42084725² = 3542248156651250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42084691 and 42084700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42084727) 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 11 ways as a sum of consecutive naturals, for example, 21824 + ... + 23673.

It is an arithmetic number, because the mean of its divisors is an integer number (4466387).

Almost surely, 2^42084725 is an apocalyptic number.

It is an amenable number.

42084725 is a deficient number, since it is larger than the sum of its proper divisors (11511919).

42084725 is a wasteful number, since it uses less digits than its factorization.

42084725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45544 (or 45539 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 42084725 is about 6487.2740808447. The cubic root of 42084725 is about 347.8362427005.

The spelling of 42084725 in words is "forty-two million, eighty-four thousand, seven hundred twenty-five".