1424304021 has 24 divisors (see below), whose sum is σ = 2280393984. Its totient is φ = 787631040.

The previous prime is 1424304001. The next prime is 1424304029. The reversal of 1424304021 is 1204034241.

It is not a de Polignac number, because 1424304021 - 2⁵ = 1424303989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424304029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151720 + ... + 160833.

It is an arithmetic number, because the mean of its divisors is an integer number (95016416).

Almost surely, 2^1424304021 is an apocalyptic number.

It is an amenable number.

1424304021 is a deficient number, since it is larger than the sum of its proper divisors (856089963).

1424304021 is a wasteful number, since it uses less digits than its factorization.

1424304021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312601 (or 312594 counting only the distinct ones).

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

The square root of 1424304021 is about 37739.9525834360. The cubic root of 1424304021 is about 1125.1253249025.

Adding to 1424304021 its reverse (1204034241), we get a palindrome (2628338262).

The spelling of 1424304021 in words is "one billion, four hundred twenty-four million, three hundred four thousand, twenty-one".