1424220321 has 16 divisors (see below), whose sum is σ = 2008032768. Its totient is φ = 896438400.

The previous prime is 1424220313. The next prime is 1424220331. The reversal of 1424220321 is 1230224241.

It is not a de Polignac number, because 1424220321 - 2³ = 1424220313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1424220331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182946 + ... + 190571.

It is an arithmetic number, because the mean of its divisors is an integer number (125502048).

Almost surely, 2^1424220321 is an apocalyptic number.

It is an amenable number.

1424220321 is a deficient number, since it is larger than the sum of its proper divisors (583812447).

1424220321 is a wasteful number, since it uses less digits than its factorization.

1424220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373592.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1424220321 is about 37738.8436627303. The cubic root of 1424220321 is about 1125.1032849370.

Adding to 1424220321 its reverse (1230224241), we get a palindrome (2654444562).

The spelling of 1424220321 in words is "one billion, four hundred twenty-four million, two hundred twenty thousand, three hundred twenty-one".