1424012321 has 4 divisors (see below), whose sum is σ = 1450880532. Its totient is φ = 1397144112.

The previous prime is 1424012299. The next prime is 1424012329. The reversal of 1424012321 is 1232104241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 567630625 + 856381696 = 23825^2 + 29264^2 .

It is a cyclic number.

It is not a de Polignac number, because 1424012321 - 2⁶ = 1424012257 is a prime.

It is a super-2 number, since 2×1424012321² = 4055622180719614082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1424012293 and 1424012302.

It is not an unprimeable number, because it can be changed into a prime (1424012329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13434026 + ... + 13434131.

It is an arithmetic number, because the mean of its divisors is an integer number (362720133).

Almost surely, 2^1424012321 is an apocalyptic number.

It is an amenable number.

1424012321 is a deficient number, since it is larger than the sum of its proper divisors (26868211).

1424012321 is an equidigital number, since it uses as much as digits as its factorization.

1424012321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26868210.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1424012321 is about 37736.0877807968. The cubic root of 1424012321 is about 1125.0485104349.

Adding to 1424012321 its reverse (1232104241), we get a palindrome (2656116562).

The spelling of 1424012321 in words is "one billion, four hundred twenty-four million, twelve thousand, three hundred twenty-one".