144243091 has 2 divisors, whose sum is σ = 144243092. Its totient is φ = 144243090.

The previous prime is 144243089. The next prime is 144243133. The reversal of 144243091 is 190342441.

144243091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (190342441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144243091 - 2¹ = 144243089 is a prime.

Together with 144243089, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (144243061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72121545 + 72121546.

It is an arithmetic number, because the mean of its divisors is an integer number (72121546).

Almost surely, 2^144243091 is an apocalyptic number.

144243091 is a deficient number, since it is larger than the sum of its proper divisors (1).

144243091 is an equidigital number, since it uses as much as digits as its factorization.

144243091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 144243091 is about 12010.1245205868. The cubic root of 144243091 is about 524.4430568469.

The spelling of 144243091 in words is "one hundred forty-four million, two hundred forty-three thousand, ninety-one".