40423442 has 16 divisors (see below), whose sum is σ = 62802432. Its totient is φ = 19493760.

The previous prime is 40423429. The next prime is 40423447. The reversal of 40423442 is 24432404.

It is not an unprimeable number, because it can be changed into a prime (40423447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20963 + ... + 22809.

It is an arithmetic number, because the mean of its divisors is an integer number (3925152).

Almost surely, 2^40423442 is an apocalyptic number.

40423442 is a deficient number, since it is larger than the sum of its proper divisors (22378990).

40423442 is a wasteful number, since it uses less digits than its factorization.

40423442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 40423442 is about 6357.9432208852. The cubic root of 40423442 is about 343.1977485394.

Adding to 40423442 its reverse (24432404), we get a palindrome (64855846).

The spelling of 40423442 in words is "forty million, four hundred twenty-three thousand, four hundred forty-two".