42344225 has 24 divisors (see below), whose sum is σ = 65466048. Its totient is φ = 26395200.

The previous prime is 42344189. The next prime is 42344231. The reversal of 42344225 is 52244324.

It is a happy number.

It is not a de Polignac number, because 42344225 - 2¹⁶ = 42278689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42344194 and 42344203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9074 + ... + 12923.

It is an arithmetic number, because the mean of its divisors is an integer number (2727752).

Almost surely, 2^42344225 is an apocalyptic number.

It is an amenable number.

42344225 is a deficient number, since it is larger than the sum of its proper divisors (23121823).

42344225 is a wasteful number, since it uses less digits than its factorization.

42344225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22025 (or 22020 counting only the distinct ones).

The product of its digits is 7680, while the sum is 26.

The square root of 42344225 is about 6507.2440402985. The cubic root of 42344225 is about 348.5497130657.

Adding to 42344225 its reverse (52244324), we get a palindrome (94588549).

Subtracting 42344225 from its reverse (52244324), we obtain a palindrome (9900099).

The spelling of 42344225 in words is "forty-two million, three hundred forty-four thousand, two hundred twenty-five".