144272229 has 4 divisors (see below), whose sum is σ = 192362976. Its totient is φ = 96181484.

The previous prime is 144272221. The next prime is 144272237. The reversal of 144272229 is 922272441.

144272229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 922272441 = 3 ⋅307424147.

It is an interprime number because it is at equal distance from previous prime (144272221) and next prime (144272237).

It is a cyclic number.

It is not a de Polignac number, because 144272229 - 2³ = 144272221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 144272229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144272221) 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, 24045369 + ... + 24045374.

It is an arithmetic number, because the mean of its divisors is an integer number (48090744).

Almost surely, 2^144272229 is an apocalyptic number.

It is an amenable number.

144272229 is a deficient number, since it is larger than the sum of its proper divisors (48090747).

144272229 is an equidigital number, since it uses as much as digits as its factorization.

144272229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48090746.

The product of its digits is 16128, while the sum is 33.

The square root of 144272229 is about 12011.3375191941. The cubic root of 144272229 is about 524.4783680540.

The spelling of 144272229 in words is "one hundred forty-four million, two hundred seventy-two thousand, two hundred twenty-nine".