4021255 has 16 divisors (see below), whose sum is σ = 5806080. Its totient is φ = 2611872.

The previous prime is 4021249. The next prime is 4021261. The reversal of 4021255 is 5521204.

It is an interprime number because it is at equal distance from previous prime (4021249) and next prime (4021261).

It is a cyclic number.

It is not a de Polignac number, because 4021255 - 2³ = 4021247 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2359 + ... + 3688.

It is an arithmetic number, because the mean of its divisors is an integer number (362880).

Almost surely, 2^4021255 is an apocalyptic number.

4021255 is a deficient number, since it is larger than the sum of its proper divisors (1784825).

4021255 is a wasteful number, since it uses less digits than its factorization.

4021255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6078.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 4021255 is about 2005.3067097080. The cubic root of 4021255 is about 159.0207770536.

Adding to 4021255 its reverse (5521204), we get a palindrome (9542459).

It can be divided in two parts, 402 and 1255, that multiplied together give a triangular number (504510 = T₁₀₀₄).

The spelling of 4021255 in words is "four million, twenty-one thousand, two hundred fifty-five".