520042101 has 8 divisors (see below), whose sum is σ = 693708384. Its totient is φ = 346535280.

The previous prime is 520042099. The next prime is 520042109. The reversal of 520042101 is 101240025.

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

It is not a de Polignac number, because 520042101 - 2¹ = 520042099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520042109) 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, 32035 + ... + 45456.

It is an arithmetic number, because the mean of its divisors is an integer number (86713548).

Almost surely, 2^520042101 is an apocalyptic number.

It is an amenable number.

520042101 is a deficient number, since it is larger than the sum of its proper divisors (173666283).

520042101 is a wasteful number, since it uses less digits than its factorization.

520042101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79731.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 520042101 is about 22804.4316087904. The cubic root of 520042101 is about 804.1668532572.

Adding to 520042101 its reverse (101240025), we get a palindrome (621282126).

The spelling of 520042101 in words is "five hundred twenty million, forty-two thousand, one hundred one".