1440001004423 has 8 divisors (see below), whose sum is σ = 1465268935536. Its totient is φ = 1414786665600.

The previous prime is 1440001004419. The next prime is 1440001004437. The reversal of 1440001004423 is 3244001000441.

It is a happy number.

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 1440001004423 - 2² = 1440001004419 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 (1440001204423) 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, 13343861 + ... + 13451342.

It is an arithmetic number, because the mean of its divisors is an integer number (183158616942).

Almost surely, 2^{1440001004423} is an apocalyptic number.

1440001004423 is a deficient number, since it is larger than the sum of its proper divisors (25267931113).

1440001004423 is an equidigital number, since it uses as much as digits as its factorization.

1440001004423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26796145.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1440001004423 its reverse (3244001000441), we get a palindrome (4684002004864).

The spelling of 1440001004423 in words is "one trillion, four hundred forty billion, one million, four thousand, four hundred twenty-three".