5178142 has 4 divisors (see below), whose sum is σ = 7767216. Its totient is φ = 2589070.

The previous prime is 5178139. The next prime is 5178143. The reversal of 5178142 is 2418715.

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

It is a self number, because there is not a number n which added to its sum of digits gives 5178142.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5178143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1294534 + ... + 1294537.

It is an arithmetic number, because the mean of its divisors is an integer number (1941804).

Almost surely, 2^5178142 is an apocalyptic number.

5178142 is a deficient number, since it is larger than the sum of its proper divisors (2589074).

5178142 is a wasteful number, since it uses less digits than its factorization.

5178142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2589073.

The product of its digits is 2240, while the sum is 28.

The square root of 5178142 is about 2275.5531195733. The cubic root of 5178142 is about 173.0047332952.

The spelling of 5178142 in words is "five million, one hundred seventy-eight thousand, one hundred forty-two".