1420443203401 has 4 divisors (see below), whose sum is σ = 1503998685972. Its totient is φ = 1336887720832.

The previous prime is 1420443203357. The next prime is 1420443203411. The reversal of 1420443203401 is 1043023440241.

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 1273171465801 + 147271737600 = 1128349^2 + 383760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420443203401 - 2⁷ = 1420443203273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420443203401.

It is not an unprimeable number, because it can be changed into a prime (1420443203411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41777741260 + ... + 41777741293.

It is an arithmetic number, because the mean of its divisors is an integer number (375999671493).

Almost surely, 2^{1420443203401} is an apocalyptic number.

It is an amenable number.

1420443203401 is a deficient number, since it is larger than the sum of its proper divisors (83555482571).

1420443203401 is an equidigital number, since it uses as much as digits as its factorization.

1420443203401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83555482570.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1420443203401 its reverse (1043023440241), we get a palindrome (2463466643642).

The spelling of 1420443203401 in words is "one trillion, four hundred twenty billion, four hundred forty-three million, two hundred three thousand, four hundred one".