4942721 has 8 divisors (see below), whose sum is σ = 5780544. Its totient is φ = 4137840.

The previous prime is 4942711. The next prime is 4942739. The reversal of 4942721 is 1272494.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-4942721 is a prime.

It is a d-powerful number, because it can be written as 4⁶ + 9⁷ + 4⁷ + 2¹³ + 7 + 2¹⁷ + 1 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4942711) 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 7 ways as a sum of consecutive naturals, for example, 7910 + ... + 8511.

It is an arithmetic number, because the mean of its divisors is an integer number (722568).

Almost surely, 2^4942721 is an apocalyptic number.

It is an amenable number.

4942721 is a deficient number, since it is larger than the sum of its proper divisors (837823).

4942721 is a wasteful number, since it uses less digits than its factorization.

4942721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16471.

The product of its digits is 4032, while the sum is 29.

The square root of 4942721 is about 2223.2231107111. The cubic root of 4942721 is about 170.3421138247.

The spelling of 4942721 in words is "four million, nine hundred forty-two thousand, seven hundred twenty-one".