144435121 has 2 divisors, whose sum is σ = 144435122. Its totient is φ = 144435120.

The previous prime is 144435097. The next prime is 144435143. The reversal of 144435121 is 121534441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130782096 + 13653025 = 11436^2 + 3695^2 .

It is a cyclic number.

It is not a de Polignac number, because 144435121 - 2¹¹ = 144433073 is a prime.

It is not a weakly prime, because it can be changed into another prime (144435721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72217560 + 72217561.

It is an arithmetic number, because the mean of its divisors is an integer number (72217561).

Almost surely, 2^144435121 is an apocalyptic number.

It is an amenable number.

144435121 is a deficient number, since it is larger than the sum of its proper divisors (1).

144435121 is an equidigital number, since it uses as much as digits as its factorization.

144435121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 144435121 is about 12018.1163665526. The cubic root of 144435121 is about 524.6756829910.

Adding to 144435121 its reverse (121534441), we get a palindrome (265969562).

The spelling of 144435121 in words is "one hundred forty-four million, four hundred thirty-five thousand, one hundred twenty-one".