1421723440489 has 16 divisors (see below), whose sum is σ = 1643370431040. Its totient is φ = 1215584296960.

The previous prime is 1421723440429. The next prime is 1421723440507. The reversal of 1421723440489 is 9840443271241.

It is a de Polignac number, because none of the positive numbers 2^k-1421723440489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421723440429) 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 15 ways as a sum of consecutive naturals, for example, 2434459 + ... + 2961424.

It is an arithmetic number, because the mean of its divisors is an integer number (102710651940).

Almost surely, 2^{1421723440489} is an apocalyptic number.

It is an amenable number.

1421723440489 is a deficient number, since it is larger than the sum of its proper divisors (221646990551).

1421723440489 is a wasteful number, since it uses less digits than its factorization.

1421723440489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397320.

The product of its (nonzero) digits is 1548288, while the sum is 49.

The spelling of 1421723440489 in words is "one trillion, four hundred twenty-one billion, seven hundred twenty-three million, four hundred forty thousand, four hundred eighty-nine".