505042043 has 16 divisors (see below), whose sum is σ = 561168384. Its totient is φ = 450696960.

The previous prime is 505042039. The next prime is 505042051. The reversal of 505042043 is 340240505.

It is a cyclic number.

It is not a de Polignac number, because 505042043 - 2² = 505042039 is a prime.

It is a super-2 number, since 2×505042043² = 510134930395227698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505042003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133646 + ... + 137372.

It is an arithmetic number, because the mean of its divisors is an integer number (35073024).

Almost surely, 2^505042043 is an apocalyptic number.

505042043 is a deficient number, since it is larger than the sum of its proper divisors (56126341).

505042043 is a wasteful number, since it uses less digits than its factorization.

505042043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 505042043 is about 22473.1404792477. The cubic root of 505042043 is about 796.3595228491.

Adding to 505042043 its reverse (340240505), we get a palindrome (845282548).

The spelling of 505042043 in words is "five hundred five million, forty-two thousand, forty-three".