505020134 has 4 divisors (see below), whose sum is σ = 757530204. Its totient is φ = 252510066.

The previous prime is 505020107. The next prime is 505020137. The reversal of 505020134 is 431020505.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 431020505 = 5 ⋅86204101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505020137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126255032 + ... + 126255035.

It is an arithmetic number, because the mean of its divisors is an integer number (189382551).

Almost surely, 2^505020134 is an apocalyptic number.

505020134 is a deficient number, since it is larger than the sum of its proper divisors (252510070).

505020134 is a wasteful number, since it uses less digits than its factorization.

505020134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252510069.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 505020134 is about 22472.6530253996. The cubic root of 505020134 is about 796.3480071787.

Adding to 505020134 its reverse (431020505), we get a palindrome (936040639).

The spelling of 505020134 in words is "five hundred five million, twenty thousand, one hundred thirty-four".