515132243242 has 16 divisors (see below), whose sum is σ = 806380972992. Its totient is φ = 246341003040.

The previous prime is 515132243221. The next prime is 515132243243. The reversal of 515132243242 is 242342231515.

It is a super-2 number, since 2×515132243242² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 515132243198 and 515132243207.

It is not an unprimeable number, because it can be changed into a prime (515132243243) 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, 170184 + ... + 1029187.

It is an arithmetic number, because the mean of its divisors is an integer number (50398810812).

Almost surely, 2^515132243242 is an apocalyptic number.

515132243242 is a deficient number, since it is larger than the sum of its proper divisors (291248729750).

515132243242 is a wasteful number, since it uses less digits than its factorization.

515132243242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208733.

The product of its digits is 57600, while the sum is 34.

Adding to 515132243242 its reverse (242342231515), we get a palindrome (757474474757).

The spelling of 515132243242 in words is "five hundred fifteen billion, one hundred thirty-two million, two hundred forty-three thousand, two hundred forty-two".