1424252221 has 8 divisors (see below), whose sum is σ = 1628028864. Its totient is φ = 1220553600.

The previous prime is 1424252213. The next prime is 1424252227. The reversal of 1424252221 is 1222524241.

It is a happy number.

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

It is not a de Polignac number, because 1424252221 - 2³ = 1424252213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424252227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27021 + ... + 59821.

It is an arithmetic number, because the mean of its divisors is an integer number (203503608).

Almost surely, 2^1424252221 is an apocalyptic number.

It is an amenable number.

1424252221 is a deficient number, since it is larger than the sum of its proper divisors (203776643).

1424252221 is an equidigital number, since it uses as much as digits as its factorization.

1424252221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39011.

The product of its digits is 2560, while the sum is 25.

The square root of 1424252221 is about 37739.2663018242. The cubic root of 1424252221 is about 1125.1116849779. Note that the first 3 decimals are identical.

Adding to 1424252221 its reverse (1222524241), we get a palindrome (2646776462).

The spelling of 1424252221 in words is "one billion, four hundred twenty-four million, two hundred fifty-two thousand, two hundred twenty-one".