42118325 has 6 divisors (see below), whose sum is σ = 52226754. Its totient is φ = 33694640.

The previous prime is 42118309. The next prime is 42118331. The reversal of 42118325 is 52381124.

It can be written as a sum of positive squares in 3 ways, for example, as 9205156 + 32913169 = 3034^2 + 5737^2 .

It is not a de Polignac number, because 42118325 - 2⁴ = 42118309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42118294 and 42118303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 842342 + ... + 842391.

It is an arithmetic number, because the mean of its divisors is an integer number (8704459).

Almost surely, 2^42118325 is an apocalyptic number.

It is an amenable number.

42118325 is a deficient number, since it is larger than the sum of its proper divisors (10108429).

42118325 is a wasteful number, since it uses less digits than its factorization.

42118325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684743 (or 1684738 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 42118325 is about 6489.8632497149. The cubic root of 42118325 is about 347.9287876702.

Adding to 42118325 its reverse (52381124), we get a palindrome (94499449).

The spelling of 42118325 in words is "forty-two million, one hundred eighteen thousand, three hundred twenty-five".