144722437 has 2 divisors, whose sum is σ = 144722438. Its totient is φ = 144722436.

The previous prime is 144722363. The next prime is 144722467. The reversal of 144722437 is 734227441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133957476 + 10764961 = 11574^2 + 3281^2 .

It is an emirp because it is prime and its reverse (734227441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144722437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144722467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72361218 + 72361219.

It is an arithmetic number, because the mean of its divisors is an integer number (72361219).

Almost surely, 2^144722437 is an apocalyptic number.

It is an amenable number.

144722437 is a deficient number, since it is larger than the sum of its proper divisors (1).

144722437 is an equidigital number, since it uses as much as digits as its factorization.

144722437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37632, while the sum is 34.

The square root of 144722437 is about 12030.0638817921. The cubic root of 144722437 is about 525.0233543655.

Adding to 144722437 its reverse (734227441), we get a palindrome (878949878).

The spelling of 144722437 in words is "one hundred forty-four million, seven hundred twenty-two thousand, four hundred thirty-seven".