144213541 has 2 divisors, whose sum is σ = 144213542. Its totient is φ = 144213540.

The previous prime is 144213539. The next prime is 144213551. The reversal of 144213541 is 145312441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111197025 + 33016516 = 10545^2 + 5746^2 .

It is a cyclic number.

It is not a de Polignac number, because 144213541 - 2¹ = 144213539 is a prime.

Together with 144213539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144213521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72106770 + 72106771.

It is an arithmetic number, because the mean of its divisors is an integer number (72106771).

Almost surely, 2^144213541 is an apocalyptic number.

It is an amenable number.

144213541 is a deficient number, since it is larger than the sum of its proper divisors (1).

144213541 is an equidigital number, since it uses as much as digits as its factorization.

144213541 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 144213541 is about 12008.8942455165. The cubic root of 144213541 is about 524.4072414961.

Adding to 144213541 its reverse (145312441), we get a palindrome (289525982).

The spelling of 144213541 in words is "one hundred forty-four million, two hundred thirteen thousand, five hundred forty-one".