1424020421 has 8 divisors (see below), whose sum is σ = 1431312960. Its totient is φ = 1416745728.

The previous prime is 1424020391. The next prime is 1424020471. The reversal of 1424020421 is 1240204241.

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

It is a cyclic number.

It is not a de Polignac number, because 1424020421 - 2¹⁰ = 1424019397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1424020393 and 1424020402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1424020471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173120 + ... + 181158.

It is an arithmetic number, because the mean of its divisors is an integer number (178914120).

Almost surely, 2^1424020421 is an apocalyptic number.

It is an amenable number.

1424020421 is a deficient number, since it is larger than the sum of its proper divisors (7292539).

1424020421 is an equidigital number, since it uses as much as digits as its factorization.

1424020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8923.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1424020421 is about 37736.1951049652. The cubic root of 1424020421 is about 1125.0506435803.

Adding to 1424020421 its reverse (1240204241), we get a palindrome (2664224662).

The spelling of 1424020421 in words is "one billion, four hundred twenty-four million, twenty thousand, four hundred twenty-one".