42430225 has 12 divisors (see below), whose sum is σ = 53158924. Its totient is φ = 33592320.

The previous prime is 42430139. The next prime is 42430253. The reversal of 42430225 is 52203424.

42430225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 10969344 + 31460881 = 3312^2 + 5609^2 .

It is not a de Polignac number, because 42430225 - 2¹³ = 42422033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42430196 and 42430205.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6324 + ... + 11173.

Almost surely, 2^42430225 is an apocalyptic number.

It is an amenable number.

42430225 is a deficient number, since it is larger than the sum of its proper divisors (10728699).

42430225 is a wasteful number, since it uses less digits than its factorization.

42430225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17604 (or 17599 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42430225 is about 6513.8487087128. The cubic root of 42430225 is about 348.7855185794.

Adding to 42430225 its reverse (52203424), we get a palindrome (94633649).

The spelling of 42430225 in words is "forty-two million, four hundred thirty thousand, two hundred twenty-five".