4221442 has 8 divisors (see below), whose sum is σ = 6486732. Its totient is φ = 2059200.

The previous prime is 4221433. The next prime is 4221449. The reversal of 4221442 is 2441224.

It can be written as a sum of positive squares in 2 ways, for example, as 3500641 + 720801 = 1871^2 + 849^2 .

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221449) 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, 25659 + ... + 25822.

Almost surely, 2^4221442 is an apocalyptic number.

4221442 is a deficient number, since it is larger than the sum of its proper divisors (2265290).

4221442 is a wasteful number, since it uses less digits than its factorization.

4221442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51524.

The product of its digits is 512, while the sum is 19.

The square root of 4221442 is about 2054.6148057483. The cubic root of 4221442 is about 161.6169632636.

Adding to 4221442 its reverse (2441224), we get a palindrome (6662666).

The spelling of 4221442 in words is "four million, two hundred twenty-one thousand, four hundred forty-two".