505042144 has 24 divisors (see below), whose sum is σ = 994926240. Its totient is φ = 252362496.

The previous prime is 505042129. The next prime is 505042147. The reversal of 505042144 is 441240505.

It is a happy number.

It is a super-2 number, since 2×505042144² = 510135134432233472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505042147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59817 + ... + 67735.

It is an arithmetic number, because the mean of its divisors is an integer number (41455260).

Almost surely, 2^505042144 is an apocalyptic number.

It is an amenable number.

505042144 is a deficient number, since it is larger than the sum of its proper divisors (489884096).

505042144 is a wasteful number, since it uses less digits than its factorization.

505042144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9922 (or 9914 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 505042144 is about 22473.1427263745. The cubic root of 505042144 is about 796.3595759353.

Adding to 505042144 its reverse (441240505), we get a palindrome (946282649).

The spelling of 505042144 in words is "five hundred five million, forty-two thousand, one hundred forty-four".