42679925 has 6 divisors (see below), whose sum is σ = 52923138. Its totient is φ = 34143920.

The previous prime is 42679921. The next prime is 42679933. The reversal of 42679925 is 52997624.

It can be written as a sum of positive squares in 3 ways, for example, as 9972964 + 32706961 = 3158^2 + 5719^2 .

It is not a de Polignac number, because 42679925 - 2² = 42679921 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42679921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 853574 + ... + 853623.

It is an arithmetic number, because the mean of its divisors is an integer number (8820523).

Almost surely, 2^42679925 is an apocalyptic number.

It is an amenable number.

42679925 is a deficient number, since it is larger than the sum of its proper divisors (10243213).

42679925 is a wasteful number, since it uses less digits than its factorization.

42679925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1707207 (or 1707202 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The square root of 42679925 is about 6532.9874483271. The cubic root of 42679925 is about 349.4683765867.

The spelling of 42679925 in words is "forty-two million, six hundred seventy-nine thousand, nine hundred twenty-five".