4020571 has 8 divisors (see below), whose sum is σ = 4302800. Its totient is φ = 3745440.

The previous prime is 4020563. The next prime is 4020587. The reversal of 4020571 is 1750204.

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

It is a cyclic number.

It is not a de Polignac number, because 4020571 - 2³ = 4020563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020671) 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, 576 + ... + 2893.

It is an arithmetic number, because the mean of its divisors is an integer number (537850).

Almost surely, 2^4020571 is an apocalyptic number.

4020571 is a deficient number, since it is larger than the sum of its proper divisors (282229).

4020571 is a wasteful number, since it uses less digits than its factorization.

4020571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3549.

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 4020571 is about 2005.1361549780. The cubic root of 4020571 is about 159.0117602683.

Adding to 4020571 its reverse (1750204), we get a palindrome (5770775).

The spelling of 4020571 in words is "four million, twenty thousand, five hundred seventy-one".