144400043 has 4 divisors (see below), whose sum is σ = 144538488. Its totient is φ = 144261600.

The previous prime is 144400033. The next prime is 144400079. The reversal of 144400043 is 340004441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 144400043 - 2¹² = 144395947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144399988 and 144400024.

It is not an unprimeable number, because it can be changed into a prime (144400033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67646 + ... + 69747.

It is an arithmetic number, because the mean of its divisors is an integer number (36134622).

Almost surely, 2^144400043 is an apocalyptic number.

144400043 is a deficient number, since it is larger than the sum of its proper divisors (138445).

144400043 is a wasteful number, since it uses less digits than its factorization.

144400043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138444.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 144400043 is about 12016.6568978231. The cubic root of 144400043 is about 524.6332047175.

Adding to 144400043 its reverse (340004441), we get a palindrome (484404484).

The spelling of 144400043 in words is "one hundred forty-four million, four hundred thousand, forty-three".