42243425 has 12 divisors (see below), whose sum is σ = 59865216. Its totient is φ = 28966800.

The previous prime is 42243413. The next prime is 42243497. The reversal of 42243425 is 52434224.

It is a happy number.

It is not a de Polignac number, because 42243425 - 2⁶ = 42243361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42243394 and 42243403.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120521 + ... + 120870.

It is an arithmetic number, because the mean of its divisors is an integer number (4988768).

Almost surely, 2^42243425 is an apocalyptic number.

It is an amenable number.

42243425 is a deficient number, since it is larger than the sum of its proper divisors (17621791).

42243425 is a wasteful number, since it uses less digits than its factorization.

42243425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241408 (or 241403 counting only the distinct ones).

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

The square root of 42243425 is about 6499.4942110906. The cubic root of 42243425 is about 348.2729202912.

Adding to 42243425 its reverse (52434224), we get a palindrome (94677649).

The spelling of 42243425 in words is "forty-two million, two hundred forty-three thousand, four hundred twenty-five".