505122141 has 4 divisors (see below), whose sum is σ = 673496192. Its totient is φ = 336748092.

The previous prime is 505122119. The next prime is 505122181. The reversal of 505122141 is 141221505.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 505122141 - 2¹⁰ = 505121117 is a prime.

It is a super-4 number, since 4×505122141⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505122181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84187021 + ... + 84187026.

It is an arithmetic number, because the mean of its divisors is an integer number (168374048).

Almost surely, 2^505122141 is an apocalyptic number.

It is an amenable number.

505122141 is a deficient number, since it is larger than the sum of its proper divisors (168374051).

505122141 is a wasteful number, since it uses less digits than its factorization.

505122141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168374050.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 505122141 is about 22474.9224915237. The cubic root of 505122141 is about 796.4016206203.

Adding to 505122141 its reverse (141221505), we get a palindrome (646343646).

The spelling of 505122141 in words is "five hundred five million, one hundred twenty-two thousand, one hundred forty-one".