4221402 has 16 divisors (see below), whose sum is σ = 8569632. Its totient is φ = 1386000.

The previous prime is 4221379. The next prime is 4221407. The reversal of 4221402 is 2041224.

It is not an unprimeable number, because it can be changed into a prime (4221407) 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, 4849 + ... + 5652.

It is an arithmetic number, because the mean of its divisors is an integer number (535602).

Almost surely, 2^4221402 is an apocalyptic number.

4221402 is an abundant number, since it is smaller than the sum of its proper divisors (4348230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4221402 is a wasteful number, since it uses less digits than its factorization.

4221402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10573.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4221402 is about 2054.6050715405. The cubic root of 4221402 is about 161.6164527983.

Adding to 4221402 its reverse (2041224), we get a palindrome (6262626).

The spelling of 4221402 in words is "four million, two hundred twenty-one thousand, four hundred two".