5165256242 has 4 divisors (see below), whose sum is σ = 7747884366. Its totient is φ = 2582628120.

The previous prime is 5165256233. The next prime is 5165256269. The reversal of 5165256242 is 2426525615.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2426525615 = 5 ⋅485305123.

It can be written as a sum of positive squares in only one way, i.e., 3874938001 + 1290318241 = 62249^2 + 35921^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5165256196 and 5165256205.

It is an unprimeable number.

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, 1291314059 + ... + 1291314062.

Almost surely, 2^5165256242 is an apocalyptic number.

5165256242 is a deficient number, since it is larger than the sum of its proper divisors (2582628124).

5165256242 is a wasteful number, since it uses less digits than its factorization.

5165256242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582628123.

The product of its digits is 144000, while the sum is 38.

The square root of 5165256242 is about 71869.7171415054. The cubic root of 5165256242 is about 1728.6110720418.

The spelling of 5165256242 in words is "five billion, one hundred sixty-five million, two hundred fifty-six thousand, two hundred forty-two".