145434241 has 2 divisors, whose sum is σ = 145434242. Its totient is φ = 145434240.

The previous prime is 145434239. The next prime is 145434301. The reversal of 145434241 is 142434541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110859841 + 34574400 = 10529^2 + 5880^2 .

It is an emirp because it is prime and its reverse (142434541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145434241 - 2¹ = 145434239 is a prime.

It is a super-4 number, since 4×145434241⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

Together with 145434239, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145431241) 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, 72717120 + 72717121.

It is an arithmetic number, because the mean of its divisors is an integer number (72717121).

Almost surely, 2^145434241 is an apocalyptic number.

It is an amenable number.

145434241 is a deficient number, since it is larger than the sum of its proper divisors (1).

145434241 is an equidigital number, since it uses as much as digits as its factorization.

145434241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 28.

The square root of 145434241 is about 12059.6119755156. The cubic root of 145434241 is about 525.8827067183.

Adding to 145434241 its reverse (142434541), we get a palindrome (287868782).

The spelling of 145434241 in words is "one hundred forty-five million, four hundred thirty-four thousand, two hundred forty-one".