1144400423142 has 128 divisors (see below), whose sum is σ = 2602406154240. Its totient is φ = 333857272320.

The previous prime is 1144400423141. The next prime is 1144400423171. The reversal of 1144400423142 is 2413240044411.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144400423141) 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 63 ways as a sum of consecutive naturals, for example, 6847608 + ... + 7012740.

It is an arithmetic number, because the mean of its divisors is an integer number (20331298080).

Almost surely, 2^{1144400423142} is an apocalyptic number.

1144400423142 is an abundant number, since it is smaller than the sum of its proper divisors (1458005731098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144400423142 is a wasteful number, since it uses less digits than its factorization.

1144400423142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165278.

The product of its (nonzero) digits is 12288, while the sum is 30.

Adding to 1144400423142 its reverse (2413240044411), we get a palindrome (3557640467553).

The spelling of 1144400423142 in words is "one trillion, one hundred forty-four billion, four hundred million, four hundred twenty-three thousand, one hundred forty-two".