1440400042023 has 16 divisors (see below), whose sum is σ = 1952061592800. Its totient is φ = 944503303680.

The previous prime is 1440400042001. The next prime is 1440400042031. The reversal of 1440400042023 is 3202400040441.

It is a happy number.

It is not a de Polignac number, because 1440400042023 - 2⁵ = 1440400041991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1440400041984 and 1440400042002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440400042073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15473643 + ... + 15566451.

It is an arithmetic number, because the mean of its divisors is an integer number (122003849550).

Almost surely, 2^{1440400042023} is an apocalyptic number.

1440400042023 is a deficient number, since it is larger than the sum of its proper divisors (511661550777).

1440400042023 is an equidigital number, since it uses as much as digits as its factorization.

1440400042023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177682.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 1440400042023 its reverse (3202400040441), we get a palindrome (4642800082464).

The spelling of 1440400042023 in words is "one trillion, four hundred forty billion, four hundred million, forty-two thousand, twenty-three".