4021286 has 8 divisors (see below), whose sum is σ = 6040440. Its totient is φ = 2007808.

The previous prime is 4021261. The next prime is 4021301. The reversal of 4021286 is 6821204.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2105 + ... + 3531.

It is an arithmetic number, because the mean of its divisors is an integer number (755055).

Almost surely, 2^4021286 is an apocalyptic number.

4021286 is a deficient number, since it is larger than the sum of its proper divisors (2019154).

4021286 is a wasteful number, since it uses less digits than its factorization.

4021286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 4021286 is about 2005.3144391840. The cubic root of 4021286 is about 159.0211856849.

The spelling of 4021286 in words is "four million, twenty-one thousand, two hundred eighty-six".