1420233421 has 8 divisors (see below), whose sum is σ = 1448618904. Its totient is φ = 1391906880.

The previous prime is 1420233391. The next prime is 1420233433. The reversal of 1420233421 is 1243320241.

It can be written as a sum of positive squares in 4 ways, for example, as 374422500 + 1045810921 = 19350^2 + 32339^2 .

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 1420233421 - 2⁵ = 1420233389 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1420233392 and 1420233401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420230421) 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, 35635 + ... + 64111.

It is an arithmetic number, because the mean of its divisors is an integer number (181077363).

Almost surely, 2^1420233421 is an apocalyptic number.

It is an amenable number.

1420233421 is a deficient number, since it is larger than the sum of its proper divisors (28385483).

1420233421 is an equidigital number, since it uses as much as digits as its factorization.

1420233421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29471.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1420233421 is about 37685.9844106533. The cubic root of 1420233421 is about 1124.0524488154.

Adding to 1420233421 its reverse (1243320241), we get a palindrome (2663553662).

The spelling of 1420233421 in words is "one billion, four hundred twenty million, two hundred thirty-three thousand, four hundred twenty-one".