5215274842 has 4 divisors (see below), whose sum is σ = 7822912266. Its totient is φ = 2607637420.

The previous prime is 5215274837. The next prime is 5215274843. The reversal of 5215274842 is 2484725125.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4509256801 + 706018041 = 67151^2 + 26571^2 .

It is a super-3 number, since 3×5215274842³ (a number of 30 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 5215274795 and 5215274804.

It is not an unprimeable number, because it can be changed into a prime (5215274843) 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, 1303818709 + ... + 1303818712.

Almost surely, 2^5215274842 is an apocalyptic number.

5215274842 is a deficient number, since it is larger than the sum of its proper divisors (2607637424).

5215274842 is a wasteful number, since it uses less digits than its factorization.

5215274842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607637423.

The product of its digits is 179200, while the sum is 40.

The square root of 5215274842 is about 72216.8598181893. The cubic root of 5215274842 is about 1734.1729197457.

Adding to 5215274842 its reverse (2484725125), we get a palindrome (7699999967).

The spelling of 5215274842 in words is "five billion, two hundred fifteen million, two hundred seventy-four thousand, eight hundred forty-two".