4997842 has 4 divisors (see below), whose sum is σ = 7496766. Its totient is φ = 2498920.

The previous prime is 4997801. The next prime is 4997843. The reversal of 4997842 is 2487994.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2487994 = 2 ⋅1243997.

It can be written as a sum of positive squares in only one way, i.e., 4756761 + 241081 = 2181^2 + 491^2 .

It is not an unprimeable number, because it can be changed into a prime (4997843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1249459 + ... + 1249462.

Almost surely, 2^4997842 is an apocalyptic number.

4997842 is a deficient number, since it is larger than the sum of its proper divisors (2498924).

4997842 is a wasteful number, since it uses less digits than its factorization.

4997842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498923.

The product of its digits is 145152, while the sum is 43.

The square root of 4997842 is about 2235.5853819526. The cubic root of 4997842 is about 170.9729902736.

The spelling of 4997842 in words is "four million, nine hundred ninety-seven thousand, eight hundred forty-two".