42107125 has 8 divisors (see below), whose sum is σ = 52549848. Its totient is φ = 33685600.

The previous prime is 42107111. The next prime is 42107129. The reversal of 42107125 is 52170124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4 + 42107121 = 2^2 + 6489^2 .

It is not a de Polignac number, because 42107125 - 2⁹ = 42106613 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 42107096 and 42107105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42107129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168304 + ... + 168553.

It is an arithmetic number, because the mean of its divisors is an integer number (6568731).

Almost surely, 2^42107125 is an apocalyptic number.

It is an amenable number.

42107125 is a deficient number, since it is larger than the sum of its proper divisors (10442723).

42107125 is an equidigital number, since it uses as much as digits as its factorization.

42107125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336872 (or 336862 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 42107125 is about 6489.0003082139. Note that the first 3 decimals coincide. The cubic root of 42107125 is about 347.8979448175.

Adding to 42107125 its reverse (52170124), we get a palindrome (94277249).

The spelling of 42107125 in words is "forty-two million, one hundred seven thousand, one hundred twenty-five".