42432445 has 8 divisors (see below), whose sum is σ = 55548000. Its totient is φ = 30859920.

The previous prime is 42432433. The next prime is 42432449. The reversal of 42432445 is 54423424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42432445 - 2⁵ = 42432413 is a prime.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42432449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385695 + ... + 385804.

It is an arithmetic number, because the mean of its divisors is an integer number (6943500).

Almost surely, 2^42432445 is an apocalyptic number.

It is an amenable number.

42432445 is a deficient number, since it is larger than the sum of its proper divisors (13115555).

42432445 is a wasteful number, since it uses less digits than its factorization.

42432445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771515.

The product of its digits is 15360, while the sum is 28.

The square root of 42432445 is about 6514.0191126523. The cubic root of 42432445 is about 348.7916014315.

Adding to 42432445 its reverse (54423424), we get a palindrome (96855869).

The spelling of 42432445 in words is "forty-two million, four hundred thirty-two thousand, four hundred forty-five".