42400323 has 24 divisors (see below), whose sum is σ = 70263648. Its totient is φ = 24135552.

The previous prime is 42400321. The next prime is 42400357. The reversal of 42400323 is 32300424.

42400323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42400323 - 2¹ = 42400321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42400296 and 42400305.

It is not an unprimeable number, because it can be changed into a prime (42400321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17311 + ... + 19607.

It is an arithmetic number, because the mean of its divisors is an integer number (2927652).

Almost surely, 2^42400323 is an apocalyptic number.

42400323 is a deficient number, since it is larger than the sum of its proper divisors (27863325).

42400323 is a wasteful number, since it uses less digits than its factorization.

42400323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603 (or 2600 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 42400323 is about 6511.5530405580. The cubic root of 42400323 is about 348.7035657143.

Adding to 42400323 its reverse (32300424), we get a palindrome (74700747).

The spelling of 42400323 in words is "forty-two million, four hundred thousand, three hundred twenty-three".