4998642 has 32 divisors (see below), whose sum is σ = 11119680. Its totient is φ = 1485120.

The previous prime is 4998641. The next prime is 4998647. The reversal of 4998642 is 2468994.

It is a d-powerful number, because it can be written as 4² + 9 + 9² + 8 + 6⁷ + 4¹¹ + 2¹⁹ .

It is a junction number, because it is equal to n+sod(n) for n = 4998594 and 4998603.

It is not an unprimeable number, because it can be changed into a prime (4998641) 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 in 15 ways as a sum of consecutive naturals, for example, 2784 + ... + 4212.

It is an arithmetic number, because the mean of its divisors is an integer number (347490).

Almost surely, 2^4998642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4998642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5559840).

4998642 is an abundant number, since it is smaller than the sum of its proper divisors (6121038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4998642 is a wasteful number, since it uses less digits than its factorization.

4998642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498.

The product of its digits is 124416, while the sum is 42.

The square root of 4998642 is about 2235.7642988473. The cubic root of 4998642 is about 170.9821122837.

The spelling of 4998642 in words is "four million, nine hundred ninety-eight thousand, six hundred forty-two".