4201142021 has 4 divisors (see below), whose sum is σ = 4205306700. Its totient is φ = 4196977344.

The previous prime is 4201142009. The next prime is 4201142059. The reversal of 4201142021 is 1202411024.

4201142021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1841611396 + 2359530625 = 42914^2 + 48575^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4201142021 is a prime.

It is a super-2 number, since 2×4201142021² = 35299188561223928882, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4201142321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2080826 + ... + 2082843.

It is an arithmetic number, because the mean of its divisors is an integer number (1051326675).

Almost surely, 2^4201142021 is an apocalyptic number.

It is an amenable number.

4201142021 is a deficient number, since it is larger than the sum of its proper divisors (4164679).

4201142021 is a wasteful number, since it uses less digits than its factorization.

4201142021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4164678.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 4201142021 is about 64816.2172685201. The cubic root of 4201142021 is about 1613.5748684386.

Adding to 4201142021 its reverse (1202411024), we get a palindrome (5403553045).

The spelling of 4201142021 in words is "four billion, two hundred one million, one hundred forty-two thousand, twenty-one".