42124225 has 24 divisors (see below), whose sum is σ = 61371072. Its totient is φ = 28276800.

The previous prime is 42124213. The next prime is 42124231. The reversal of 42124225 is 52242124.

It is not a de Polignac number, because 42124225 - 2⁵ = 42124193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42124196 and 42124205.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2317 + ... + 9466.

It is an arithmetic number, because the mean of its divisors is an integer number (2557128).

Almost surely, 2^42124225 is an apocalyptic number.

It is an amenable number.

42124225 is a deficient number, since it is larger than the sum of its proper divisors (19246847).

42124225 is a wasteful number, since it uses less digits than its factorization.

42124225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11817 (or 11812 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 42124225 is about 6490.3177888298. The cubic root of 42124225 is about 347.9450330456.

Adding to 42124225 its reverse (52242124), we get a palindrome (94366349).

The spelling of 42124225 in words is "forty-two million, one hundred twenty-four thousand, two hundred twenty-five".