42505323 has 8 divisors (see below), whose sum is σ = 64770048. Its totient is φ = 24288744.

The previous prime is 42505277. The next prime is 42505327. The reversal of 42505323 is 32350524.

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

It is not a de Polignac number, because 42505323 - 2²² = 38311019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42505293 and 42505302.

It is not an unprimeable number, because it can be changed into a prime (42505327) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1012011 + ... + 1012052.

It is an arithmetic number, because the mean of its divisors is an integer number (8096256).

Almost surely, 2^42505323 is an apocalyptic number.

42505323 is a deficient number, since it is larger than the sum of its proper divisors (22264725).

42505323 is a wasteful number, since it uses less digits than its factorization.

42505323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2024073.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 42505323 is about 6519.6106478838. The cubic root of 42505323 is about 348.9911711682.

Adding to 42505323 its reverse (32350524), we get a palindrome (74855847).

The spelling of 42505323 in words is "forty-two million, five hundred five thousand, three hundred twenty-three".