4201427721 has 8 divisors (see below), whose sum is σ = 5604911584. Its totient is φ = 2799447840.

The previous prime is 4201427689. The next prime is 4201427723. The reversal of 4201427721 is 1277241024.

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

It is not a de Polignac number, because 4201427721 - 2⁵ = 4201427689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4201427723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369460 + ... + 380661.

It is an arithmetic number, because the mean of its divisors is an integer number (700613948).

Almost surely, 2^4201427721 is an apocalyptic number.

It is an amenable number.

4201427721 is a deficient number, since it is larger than the sum of its proper divisors (1403483863).

4201427721 is a wasteful number, since it uses less digits than its factorization.

4201427721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751991.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 4201427721 is about 64818.4211547921. The cubic root of 4201427721 is about 1613.6114448336.

Adding to 4201427721 its reverse (1277241024), we get a palindrome (5478668745).

The spelling of 4201427721 in words is "four billion, two hundred one million, four hundred twenty-seven thousand, seven hundred twenty-one".