4241721 has 16 divisors (see below), whose sum is σ = 6533568. Its totient is φ = 2419200.

The previous prime is 4241711. The next prime is 4241723. The reversal of 4241721 is 1271424.

It is a happy number.

It is not a de Polignac number, because 4241721 - 2⁵ = 4241689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4241723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3220 + ... + 4341.

It is an arithmetic number, because the mean of its divisors is an integer number (408348).

Almost surely, 2^4241721 is an apocalyptic number.

It is an amenable number.

4241721 is a deficient number, since it is larger than the sum of its proper divisors (2291847).

4241721 is a wasteful number, since it uses less digits than its factorization.

4241721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7592.

The product of its digits is 448, while the sum is 21.

The square root of 4241721 is about 2059.5438815427. The cubic root of 4241721 is about 161.8753422969.

It can be divided in two parts, 424 and 1721, that added together give a triangular number (2145 = T₆₅).

The spelling of 4241721 in words is "four million, two hundred forty-one thousand, seven hundred twenty-one".