5251426121242 has 24 divisors (see below), whose sum is σ = 9163285053300. Its totient is φ = 2250590973120.

The previous prime is 5251426121203. The next prime is 5251426121261. The reversal of 5251426121242 is 2421216241525.

It can be written as a sum of positive squares in 2 ways, for example, as 5163115518001 + 88310603241 = 2272249^2 + 297171^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16962192 + ... + 17269012.

Almost surely, 2^{5251426121242} is an apocalyptic number.

5251426121242 is a deficient number, since it is larger than the sum of its proper divisors (3911858932058).

5251426121242 is a wasteful number, since it uses less digits than its factorization.

5251426121242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481486 (or 481479 counting only the distinct ones).

The product of its digits is 76800, while the sum is 37.

The spelling of 5251426121242 in words is "five trillion, two hundred fifty-one billion, four hundred twenty-six million, one hundred twenty-one thousand, two hundred forty-two".