144340403 has 4 divisors (see below), whose sum is σ = 146079528. Its totient is φ = 142601280.

The previous prime is 144340393. The next prime is 144340411. The reversal of 144340403 is 304043441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304043441 = 13 ⋅23387957.

It is a cyclic number.

It is not a de Polignac number, because 144340403 - 2²⁴ = 127563187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144340463) 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, 869438 + ... + 869603.

It is an arithmetic number, because the mean of its divisors is an integer number (36519882).

Almost surely, 2^144340403 is an apocalyptic number.

144340403 is a deficient number, since it is larger than the sum of its proper divisors (1739125).

144340403 is an equidigital number, since it uses as much as digits as its factorization.

144340403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739124.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 144340403 is about 12014.1750861222. The cubic root of 144340403 is about 524.5609668974.

Adding to 144340403 its reverse (304043441), we get a palindrome (448383844).

The spelling of 144340403 in words is "one hundred forty-four million, three hundred forty thousand, four hundred three".