45440242 has 8 divisors (see below), whose sum is σ = 69277932. Its totient is φ = 22347600.

The previous prime is 45440233. The next prime is 45440243. The reversal of 45440242 is 24204454.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 45279441 + 160801 = 6729^2 + 401^2 .

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

It is not an unprimeable number, because it can be changed into a prime (45440243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186109 + ... + 186352.

Almost surely, 2^45440242 is an apocalyptic number.

45440242 is a deficient number, since it is larger than the sum of its proper divisors (23837690).

45440242 is a wasteful number, since it uses less digits than its factorization.

45440242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372524.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 45440242 is about 6740.9377685898. The cubic root of 45440242 is about 356.8454896605.

Adding to 45440242 its reverse (24204454), we get a palindrome (69644696).

The spelling of 45440242 in words is "forty-five million, four hundred forty thousand, two hundred forty-two".