4221136 has 10 divisors (see below), whose sum is σ = 8178482. Its totient is φ = 2110560.

The previous prime is 4221109. The next prime is 4221169. The reversal of 4221136 is 6311224.

It can be written as a sum of positive squares in only one way, i.e., 4161600 + 59536 = 2040^2 + 244^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131895 + ... + 131926.

Almost surely, 2^4221136 is an apocalyptic number.

It is an amenable number.

4221136 is a deficient number, since it is larger than the sum of its proper divisors (3957346).

4221136 is a wasteful number, since it uses less digits than its factorization.

4221136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263829 (or 263823 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 4221136 is about 2054.5403378858. The cubic root of 4221136 is about 161.6130581220.

It can be divided in two parts, 4221 and 136, that multiplied together give a triangular number (574056 = T₁₀₇₁).

The spelling of 4221136 in words is "four million, two hundred twenty-one thousand, one hundred thirty-six".