42421125 has 16 divisors (see below), whose sum is σ = 70589376. Its totient is φ = 22624400.

The previous prime is 42421123. The next prime is 42421133. The reversal of 42421125 is 52112424.

42421125 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 42421125 - 2¹ = 42421123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42421121) 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, 56187 + ... + 56936.

It is an arithmetic number, because the mean of its divisors is an integer number (4411836).

Almost surely, 2^42421125 is an apocalyptic number.

It is an amenable number.

42421125 is a deficient number, since it is larger than the sum of its proper divisors (28168251).

42421125 is a wasteful number, since it uses less digits than its factorization.

42421125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113141 (or 113131 counting only the distinct ones).

The product of its digits is 640, while the sum is 21.

The square root of 42421125 is about 6513.1501594850. The cubic root of 42421125 is about 348.7605821483.

Adding to 42421125 its reverse (52112424), we get a palindrome (94533549).

The spelling of 42421125 in words is "forty-two million, four hundred twenty-one thousand, one hundred twenty-five".