144217147 has 2 divisors, whose sum is σ = 144217148. Its totient is φ = 144217146.

The previous prime is 144217123. The next prime is 144217211. The reversal of 144217147 is 741712441.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 144217147 - 2⁷ = 144217019 is a prime.

It is not a weakly prime, because it can be changed into another prime (144217247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72108573 + 72108574.

It is an arithmetic number, because the mean of its divisors is an integer number (72108574).

Almost surely, 2^144217147 is an apocalyptic number.

144217147 is a deficient number, since it is larger than the sum of its proper divisors (1).

144217147 is an equidigital number, since it uses as much as digits as its factorization.

144217147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 31.

The square root of 144217147 is about 12009.0443832971. The cubic root of 144217147 is about 524.4116123218.

Adding to 144217147 its reverse (741712441), we get a palindrome (885929588).

The spelling of 144217147 in words is "one hundred forty-four million, two hundred seventeen thousand, one hundred forty-seven".