1420432342221 has 16 divisors (see below), whose sum is σ = 1994218596800. Its totient is φ = 896831958528.

The previous prime is 1420432342171. The next prime is 1420432342223. The reversal of 1420432342221 is 1222432340241.

It is not a de Polignac number, because 1420432342221 - 2⁶ = 1420432342157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420432342223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3751186 + ... + 4112451.

It is an arithmetic number, because the mean of its divisors is an integer number (124638662300).

Almost surely, 2^{1420432342221} is an apocalyptic number.

It is an amenable number.

1420432342221 is a deficient number, since it is larger than the sum of its proper divisors (573786254579).

1420432342221 is a wasteful number, since it uses less digits than its factorization.

1420432342221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7866828.

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 1420432342221 its reverse (1222432340241), we get a palindrome (2642864682462).

The spelling of 1420432342221 in words is "one trillion, four hundred twenty billion, four hundred thirty-two million, three hundred forty-two thousand, two hundred twenty-one".