42816125 has 16 divisors (see below), whose sum is σ = 58294080. Its totient is φ = 31138000.

The previous prime is 42816119. The next prime is 42816127. The reversal of 42816125 is 52161824.

42816125 = 283² + 284² + ... + 532².

It is not a de Polignac number, because 42816125 - 2⁶ = 42816061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42816127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14195 + ... + 16944.

It is an arithmetic number, because the mean of its divisors is an integer number (3643380).

Almost surely, 2^42816125 is an apocalyptic number.

It is an amenable number.

42816125 is a deficient number, since it is larger than the sum of its proper divisors (15477955).

42816125 is a wasteful number, since it uses less digits than its factorization.

42816125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31165 (or 31155 counting only the distinct ones).

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

The square root of 42816125 is about 6543.4031665487. The cubic root of 42816125 is about 349.8397225328.

Adding to 42816125 its reverse (52161824), we get a palindrome (94977949).

The spelling of 42816125 in words is "forty-two million, eight hundred sixteen thousand, one hundred twenty-five".