42000125 has 16 divisors (see below), whose sum is σ = 52648752. Its totient is φ = 33451200.

The previous prime is 42000109. The next prime is 42000131. The reversal of 42000125 is 52100024.

It can be written as a sum of positive squares in 8 ways, for example, as 32501401 + 9498724 = 5701^2 + 3082^2 .

It is not a de Polignac number, because 42000125 - 2⁴ = 42000109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34019 + ... + 35231.

It is an arithmetic number, because the mean of its divisors is an integer number (3290547).

Almost surely, 2^42000125 is an apocalyptic number.

It is an amenable number.

42000125 is a deficient number, since it is larger than the sum of its proper divisors (10648627).

42000125 is a wasteful number, since it uses less digits than its factorization.

42000125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505 (or 1495 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 42000125 is about 6480.7503423601. The cubic root of 42000125 is about 347.6030093322.

Adding to 42000125 its reverse (52100024), we get a palindrome (94100149).

The spelling of 42000125 in words is "forty-two million, one hundred twenty-five", and thus it is an aban number.