5157242 has 4 divisors (see below), whose sum is σ = 7735866. Its totient is φ = 2578620.

The previous prime is 5157241. The next prime is 5157247. The reversal of 5157242 is 2427515.

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., 3171961 + 1985281 = 1781^2 + 1409^2 .

It is a d-powerful number, because it can be written as 5 + 1 + 5³ + 7⁷ + 2¹³ + 4¹¹ + 2¹⁷ .

It is not an unprimeable number, because it can be changed into a prime (5157241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1289309 + ... + 1289312.

Almost surely, 2^5157242 is an apocalyptic number.

5157242 is a deficient number, since it is larger than the sum of its proper divisors (2578624).

5157242 is a wasteful number, since it uses less digits than its factorization.

5157242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578623.

The product of its digits is 2800, while the sum is 26.

The square root of 5157242 is about 2270.9561862793. The cubic root of 5157242 is about 172.7716590538.

The spelling of 5157242 in words is "five million, one hundred fifty-seven thousand, two hundred forty-two".