4978742 has 4 divisors (see below), whose sum is σ = 7468116. Its totient is φ = 2489370.

The previous prime is 4978723. The next prime is 4978751. The reversal of 4978742 is 2478794.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2478794 = 2 ⋅1239397.

It is a self number, because there is not a number n which added to its sum of digits gives 4978742.

It is a congruent number.

It is an unprimeable number.

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, 1244684 + ... + 1244687.

It is an arithmetic number, because the mean of its divisors is an integer number (1867029).

Almost surely, 2^4978742 is an apocalyptic number.

4978742 is a deficient number, since it is larger than the sum of its proper divisors (2489374).

4978742 is a wasteful number, since it uses less digits than its factorization.

4978742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489373.

The product of its digits is 112896, while the sum is 41.

The square root of 4978742 is about 2231.3094809999. The cubic root of 4978742 is about 170.7549126219.

The spelling of 4978742 in words is "four million, nine hundred seventy-eight thousand, seven hundred forty-two".