144513121 has 2 divisors, whose sum is σ = 144513122. Its totient is φ = 144513120.

The previous prime is 144513113. The next prime is 144513133. The reversal of 144513121 is 121315441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136890000 + 7623121 = 11700^2 + 2761^2 .

It is a cyclic number.

It is not a de Polignac number, because 144513121 - 2³ = 144513113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144513092 and 144513101.

It is not a weakly prime, because it can be changed into another prime (144513521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72256560 + 72256561.

It is an arithmetic number, because the mean of its divisors is an integer number (72256561).

Almost surely, 2^144513121 is an apocalyptic number.

It is an amenable number.

144513121 is a deficient number, since it is larger than the sum of its proper divisors (1).

144513121 is an equidigital number, since it uses as much as digits as its factorization.

144513121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 22.

The square root of 144513121 is about 12021.3610294342. The cubic root of 144513121 is about 524.7701137137.

Adding to 144513121 its reverse (121315441), we get a palindrome (265828562).

The spelling of 144513121 in words is "one hundred forty-four million, five hundred thirteen thousand, one hundred twenty-one".