5152171210042 has 4 divisors (see below), whose sum is σ = 7728256815066. Its totient is φ = 2576085605020.

The previous prime is 5152171210013. The next prime is 5152171210049. The reversal of 5152171210042 is 2400121712515.

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., 2593223901801 + 2558947308241 = 1610349^2 + 1599671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5152171209986 and 5152171210013.

It is not an unprimeable number, because it can be changed into a prime (5152171210049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1288042802509 + ... + 1288042802512.

Almost surely, 2^{5152171210042} is an apocalyptic number.

5152171210042 is a deficient number, since it is larger than the sum of its proper divisors (2576085605024).

5152171210042 is a wasteful number, since it uses less digits than its factorization.

5152171210042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576085605023.

The product of its (nonzero) digits is 5600, while the sum is 31.

Adding to 5152171210042 its reverse (2400121712515), we get a palindrome (7552292922557).

The spelling of 5152171210042 in words is "five trillion, one hundred fifty-two billion, one hundred seventy-one million, two hundred ten thousand, forty-two".