1424440221 has 8 divisors (see below), whose sum is σ = 1901812800. Its totient is φ = 948347232.

The previous prime is 1424440207. The next prime is 1424440249. The reversal of 1424440221 is 1220444241.

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

It is not a de Polignac number, because 1424440221 - 2⁵ = 1424440189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1424440191 and 1424440200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424440261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317296 + ... + 321753.

It is an arithmetic number, because the mean of its divisors is an integer number (237726600).

Almost surely, 2^1424440221 is an apocalyptic number.

It is an amenable number.

1424440221 is a deficient number, since it is larger than the sum of its proper divisors (477372579).

1424440221 is an equidigital number, since it uses as much as digits as its factorization.

1424440221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639795.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1424440221 is about 37741.7569940775. The cubic root of 1424440221 is about 1125.1611873735.

Adding to 1424440221 its reverse (1220444241), we get a palindrome (2644884462).

The spelling of 1424440221 in words is "one billion, four hundred twenty-four million, four hundred forty thousand, two hundred twenty-one".