505242003 has 8 divisors (see below), whose sum is σ = 769892608. Its totient is φ = 288709704.

The previous prime is 505241983. The next prime is 505242011. The reversal of 505242003 is 300242505.

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

It is not a de Polignac number, because 505242003 - 2⁸ = 505241747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 24059143 = 505242003 / (5 + 0 + 5 + 2 + 4 + 2 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (505242103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12029551 + ... + 12029592.

It is an arithmetic number, because the mean of its divisors is an integer number (96236576).

Almost surely, 2^505242003 is an apocalyptic number.

505242003 is a deficient number, since it is larger than the sum of its proper divisors (264650605).

505242003 is a wasteful number, since it uses less digits than its factorization.

505242003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24059153.

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 505242003 is about 22477.5889053964. The cubic root of 505242003 is about 796.4646091755.

Adding to 505242003 its reverse (300242505), we get a palindrome (805484508).

The spelling of 505242003 in words is "five hundred five million, two hundred forty-two thousand, three".