4020213 has 4 divisors (see below), whose sum is σ = 5360288. Its totient is φ = 2680140.

The previous prime is 4020197. The next prime is 4020217. The reversal of 4020213 is 3120204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4020213 - 2⁴ = 4020197 is a prime.

It is a super-2 number, since 2×4020213² = 32324225130738, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020217) 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, 670033 + ... + 670038.

It is an arithmetic number, because the mean of its divisors is an integer number (1340072).

Almost surely, 2^4020213 is an apocalyptic number.

It is an amenable number.

4020213 is a deficient number, since it is larger than the sum of its proper divisors (1340075).

4020213 is a wasteful number, since it uses less digits than its factorization.

4020213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340074.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 4020213 is about 2005.0468822449. The cubic root of 4020213 is about 159.0070405490.

Adding to 4020213 its reverse (3120204), we get a palindrome (7140417).

Subtracting from 4020213 its reverse (3120204), we obtain a palindrome (900009).

The spelling of 4020213 in words is "four million, twenty thousand, two hundred thirteen".