40344242 has 4 divisors (see below), whose sum is σ = 60516366. Its totient is φ = 20172120.

The previous prime is 40344229. The next prime is 40344257. The reversal of 40344242 is 24244304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 33744481 + 6599761 = 5809^2 + 2569^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10086059 + ... + 10086062.

Almost surely, 2^40344242 is an apocalyptic number.

40344242 is a deficient number, since it is larger than the sum of its proper divisors (20172124).

40344242 is a wasteful number, since it uses less digits than its factorization.

40344242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20172123.

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

The square root of 40344242 is about 6351.7117377916. The cubic root of 40344242 is about 342.9734642183.

Adding to 40344242 its reverse (24244304), we get a palindrome (64588546).

The spelling of 40344242 in words is "forty million, three hundred forty-four thousand, two hundred forty-two".