42432425 has 36 divisors (see below), whose sum is σ = 63954240. Its totient is φ = 27352320.

The previous prime is 42432419. The next prime is 42432427. The reversal of 42432425 is 52423424.

It is a happy number.

It is not a de Polignac number, because 42432425 - 2⁶ = 42432361 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42432394 and 42432403.

It is not an unprimeable number, because it can be changed into a prime (42432427) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50156 + ... + 50994.

Almost surely, 2^42432425 is an apocalyptic number.

It is an amenable number.

42432425 is a deficient number, since it is larger than the sum of its proper divisors (21521815).

42432425 is a wasteful number, since it uses less digits than its factorization.

42432425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890 (or 868 counting only the distinct ones).

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

The square root of 42432425 is about 6514.0175775016. The cubic root of 42432425 is about 348.7915466320.

Adding to 42432425 its reverse (52423424), we get a palindrome (94855849).

Subtracting 42432425 from its reverse (52423424), we obtain a palindrome (9990999).

The spelling of 42432425 in words is "forty-two million, four hundred thirty-two thousand, four hundred twenty-five".