4143021 has 8 divisors (see below), whose sum is σ = 5533920. Its totient is φ = 2757072.

The previous prime is 4143011. The next prime is 4143023. The reversal of 4143021 is 1203414.

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

It is not a de Polignac number, because 4143021 - 2⁵ = 4142989 is a prime.

4143021 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4143023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1750 + ... + 3368.

It is an arithmetic number, because the mean of its divisors is an integer number (691740).

Almost surely, 2^4143021 is an apocalyptic number.

It is an amenable number.

4143021 is a deficient number, since it is larger than the sum of its proper divisors (1390899).

4143021 is a wasteful number, since it uses less digits than its factorization.

4143021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 4143021 is about 2035.4412298074. The cubic root of 4143021 is about 160.6099245997.

Adding to 4143021 its reverse (1203414), we get a palindrome (5346435).

The spelling of 4143021 in words is "four million, one hundred forty-three thousand, twenty-one".