144021307 has 2 divisors, whose sum is σ = 144021308. Its totient is φ = 144021306.

The previous prime is 144021277. The next prime is 144021323. The reversal of 144021307 is 703120441.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 144021307 - 2⁷ = 144021179 is a prime.

It is not a weakly prime, because it can be changed into another prime (144021347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72010653 + 72010654.

It is an arithmetic number, because the mean of its divisors is an integer number (72010654).

Almost surely, 2^144021307 is an apocalyptic number.

144021307 is a deficient number, since it is larger than the sum of its proper divisors (1).

144021307 is an equidigital number, since it uses as much as digits as its factorization.

144021307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 144021307 is about 12000.8877588285. The cubic root of 144021307 is about 524.1741294820.

Adding to 144021307 its reverse (703120441), we get a palindrome (847141748).

The spelling of 144021307 in words is "one hundred forty-four million, twenty-one thousand, three hundred seven".