144739121 has 2 divisors, whose sum is σ = 144739122. Its totient is φ = 144739120.

The previous prime is 144739103. The next prime is 144739151. The reversal of 144739121 is 121937441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129049600 + 15689521 = 11360^2 + 3961^2 .

It is an emirp because it is prime and its reverse (121937441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 144739121 - 2¹⁴ = 144722737 is a prime.

It is a Chen prime.

It is equal to p_8164814 and since 144739121 and 8164814 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (144739151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72369560 + 72369561.

It is an arithmetic number, because the mean of its divisors is an integer number (72369561).

Almost surely, 2^144739121 is an apocalyptic number.

It is an amenable number.

144739121 is a deficient number, since it is larger than the sum of its proper divisors (1).

144739121 is an equidigital number, since it uses as much as digits as its factorization.

144739121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 144739121 is about 12030.7572912099. The cubic root of 144739121 is about 525.0435289683.

The spelling of 144739121 in words is "one hundred forty-four million, seven hundred thirty-nine thousand, one hundred twenty-one".