45117842 has 16 divisors (see below), whose sum is σ = 84376512. Its totient is φ = 17578320.

The previous prime is 45117797. The next prime is 45117883. The reversal of 45117842 is 24871154.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 45117799 and 45117808.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146333 + ... + 146640.

It is an arithmetic number, because the mean of its divisors is an integer number (5273532).

Almost surely, 2^45117842 is an apocalyptic number.

45117842 is a deficient number, since it is larger than the sum of its proper divisors (39258670).

45117842 is a wasteful number, since it uses less digits than its factorization.

45117842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292993.

The product of its digits is 8960, while the sum is 32.

The square root of 45117842 is about 6716.9816137905. The cubic root of 45117842 is about 355.9995423552. Note that the first 3 decimals are identical.

Adding to 45117842 its reverse (24871154), we get a palindrome (69988996).

The spelling of 45117842 in words is "forty-five million, one hundred seventeen thousand, eight hundred forty-two".