42040323 has 16 divisors (see below), whose sum is σ = 67073440. Its totient is φ = 25870752.

The previous prime is 42040321. The next prime is 42040351. The reversal of 42040323 is 32304024.

It is not a de Polignac number, because 42040323 - 2¹ = 42040321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42040296 and 42040305.

It is not an unprimeable number, because it can be changed into a prime (42040321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59536 + ... + 60237.

It is an arithmetic number, because the mean of its divisors is an integer number (4192090).

Almost surely, 2^42040323 is an apocalyptic number.

42040323 is a deficient number, since it is larger than the sum of its proper divisors (25033117).

42040323 is a wasteful number, since it uses less digits than its factorization.

42040323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119795 (or 119789 counting only the distinct ones).

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

The square root of 42040323 is about 6483.8509390639. The cubic root of 42040323 is about 347.7138700367.

Adding to 42040323 its reverse (32304024), we get a palindrome (74344347).

The spelling of 42040323 in words is "forty-two million, forty thousand, three hundred twenty-three".