4221415 has 8 divisors (see below), whose sum is σ = 5526288. Its totient is φ = 3070080.

The previous prime is 4221409. The next prime is 4221419. The reversal of 4221415 is 5141224.

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

It is not a de Polignac number, because 4221415 - 2³ = 4221407 is a prime.

It is a Duffinian number.

4221415 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4221392 and 4221401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4221419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38322 + ... + 38431.

It is an arithmetic number, because the mean of its divisors is an integer number (690786).

Almost surely, 2^4221415 is an apocalyptic number.

4221415 is a deficient number, since it is larger than the sum of its proper divisors (1304873).

4221415 is a wasteful number, since it uses less digits than its factorization.

4221415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76769.

The product of its digits is 320, while the sum is 19.

The square root of 4221415 is about 2054.6082351631. The cubic root of 4221415 is about 161.6166186998.

Adding to 4221415 its reverse (5141224), we get a palindrome (9362639).

The spelling of 4221415 in words is "four million, two hundred twenty-one thousand, four hundred fifteen".