1420443001 has 4 divisors (see below), whose sum is σ = 1420531600. Its totient is φ = 1420354404.

The previous prime is 1420442999. The next prime is 1420443023. The reversal of 1420443001 is 1003440241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1420443001 - 2¹ = 1420442999 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 1420443001.

It is not an unprimeable number, because it can be changed into a prime (1420443091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12771 + ... + 54808.

It is an arithmetic number, because the mean of its divisors is an integer number (355132900).

Almost surely, 2^1420443001 is an apocalyptic number.

It is an amenable number.

1420443001 is a deficient number, since it is larger than the sum of its proper divisors (88599).

1420443001 is an equidigital number, since it uses as much as digits as its factorization.

1420443001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88598.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1420443001 is about 37688.7649174127. The cubic root of 1420443001 is about 1124.1077372213.

Adding to 1420443001 its reverse (1003440241), we get a palindrome (2423883242).

The spelling of 1420443001 in words is "one billion, four hundred twenty million, four hundred forty-three thousand, one".