520144342 has 16 divisors (see below), whose sum is σ = 869592240. Its totient is φ = 231890688.

The previous prime is 520144283. The next prime is 520144433. The reversal of 520144342 is 243441025.

It is a happy number.

It is a super-3 number, since 3×520144342³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401943 + ... + 403234.

It is an arithmetic number, because the mean of its divisors is an integer number (54349515).

Almost surely, 2^520144342 is an apocalyptic number.

520144342 is a deficient number, since it is larger than the sum of its proper divisors (349447898).

520144342 is a wasteful number, since it uses less digits than its factorization.

520144342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805215.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 520144342 is about 22806.6731900994. The cubic root of 520144342 is about 804.2195499110.

Adding to 520144342 its reverse (243441025), we get a palindrome (763585367).

The spelling of 520144342 in words is "five hundred twenty million, one hundred forty-four thousand, three hundred forty-two".