144157961 has 2 divisors, whose sum is σ = 144157962. Its totient is φ = 144157960.

The previous prime is 144157891. The next prime is 144157999. The reversal of 144157961 is 169751441.

It is a happy number.

It is an a-pointer prime, because the next prime (144157999) can be obtained adding 144157961 to its sum of digits (38).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104857600 + 39300361 = 10240^2 + 6269^2 .

It is a cyclic number.

It is not a de Polignac number, because 144157961 - 2¹⁰ = 144156937 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144147961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72078980 + 72078981.

It is an arithmetic number, because the mean of its divisors is an integer number (72078981).

Almost surely, 2^144157961 is an apocalyptic number.

It is an amenable number.

144157961 is a deficient number, since it is larger than the sum of its proper divisors (1).

144157961 is an equidigital number, since it uses as much as digits as its factorization.

144157961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 38.

The square root of 144157961 is about 12006.5799043691. The cubic root of 144157961 is about 524.3398638665.

The spelling of 144157961 in words is "one hundred forty-four million, one hundred fifty-seven thousand, nine hundred sixty-one".