144421547 has 2 divisors, whose sum is σ = 144421548. Its totient is φ = 144421546.

The previous prime is 144421523. The next prime is 144421561. The reversal of 144421547 is 745124441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144421547 - 2¹⁶ = 144356011 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144421507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72210773 + 72210774.

It is an arithmetic number, because the mean of its divisors is an integer number (72210774).

Almost surely, 2^144421547 is an apocalyptic number.

144421547 is a deficient number, since it is larger than the sum of its proper divisors (1).

144421547 is an equidigital number, since it uses as much as digits as its factorization.

144421547 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 32.

The square root of 144421547 is about 12017.5516225228. The cubic root of 144421547 is about 524.6592461512.

Adding to 144421547 its reverse (745124441), we get a palindrome (889545988).

The spelling of 144421547 in words is "one hundred forty-four million, four hundred twenty-one thousand, five hundred forty-seven".