505220120 has 32 divisors (see below), whose sum is σ = 1137417120. Its totient is φ = 201968640.

The previous prime is 505220101. The next prime is 505220129. The reversal of 505220120 is 21022505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505220129) 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, 101285 + ... + 106155.

It is an arithmetic number, because the mean of its divisors is an integer number (35544285).

Almost surely, 2^505220120 is an apocalyptic number.

It is an amenable number.

505220120 is an abundant number, since it is smaller than the sum of its proper divisors (632197000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

505220120 is a wasteful number, since it uses less digits than its factorization.

505220120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7475 (or 7471 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 505220120 is about 22477.1021263863. The cubic root of 505220120 is about 796.4531102063.

Adding to 505220120 its reverse (21022505), we get a palindrome (526242625).

The spelling of 505220120 in words is "five hundred five million, two hundred twenty thousand, one hundred twenty".