144775121 has 2 divisors, whose sum is σ = 144775122. Its totient is φ = 144775120.

The previous prime is 144775093. The next prime is 144775123. The reversal of 144775121 is 121577441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88360000 + 56415121 = 9400^2 + 7511^2 .

It is a cyclic number.

It is not a de Polignac number, because 144775121 - 2¹⁴ = 144758737 is a prime.

Together with 144775123, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144775123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72387560 + 72387561.

It is an arithmetic number, because the mean of its divisors is an integer number (72387561).

Almost surely, 2^144775121 is an apocalyptic number.

It is an amenable number.

144775121 is a deficient number, since it is larger than the sum of its proper divisors (1).

144775121 is an equidigital number, since it uses as much as digits as its factorization.

144775121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 32.

The square root of 144775121 is about 12032.2533633563. The cubic root of 144775121 is about 525.0870555561.

The spelling of 144775121 in words is "one hundred forty-four million, seven hundred seventy-five thousand, one hundred twenty-one".