42861125 has 8 divisors (see below), whose sum is σ = 53490840. Its totient is φ = 34288800.

The previous prime is 42861109. The next prime is 42861149. The reversal of 42861125 is 52116824.

It can be written as a sum of positive squares in 4 ways, for example, as 11847364 + 31013761 = 3442^2 + 5569^2 .

It is not a de Polignac number, because 42861125 - 2⁴ = 42861109 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 171320 + ... + 171569.

It is an arithmetic number, because the mean of its divisors is an integer number (6686355).

Almost surely, 2^42861125 is an apocalyptic number.

It is an amenable number.

42861125 is a deficient number, since it is larger than the sum of its proper divisors (10629715).

42861125 is an equidigital number, since it uses as much as digits as its factorization.

42861125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342904 (or 342894 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 42861125 is about 6546.8408411997. The cubic root of 42861125 is about 349.9622408245.

Adding to 42861125 its reverse (52116824), we get a palindrome (94977949).

The spelling of 42861125 in words is "forty-two million, eight hundred sixty-one thousand, one hundred twenty-five".