4221842 has 4 divisors (see below), whose sum is σ = 6332766. Its totient is φ = 2110920.

The previous prime is 4221829. The next prime is 4221851. The reversal of 4221842 is 2481224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4036081 + 185761 = 2009^2 + 431^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055459 + ... + 1055462.

Almost surely, 2^4221842 is an apocalyptic number.

4221842 is a deficient number, since it is larger than the sum of its proper divisors (2110924).

4221842 is a wasteful number, since it uses less digits than its factorization.

4221842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110923.

The product of its digits is 1024, while the sum is 23.

The square root of 4221842 is about 2054.7121452895. The cubic root of 4221842 is about 161.6220677392.

The spelling of 4221842 in words is "four million, two hundred twenty-one thousand, eight hundred forty-two".