145237243 has 2 divisors, whose sum is σ = 145237244. Its totient is φ = 145237242.

The previous prime is 145237241. The next prime is 145237271. The reversal of 145237243 is 342732541.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (342732541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145237243 - 2¹ = 145237241 is a prime.

Together with 145237241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145237241) 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, 72618621 + 72618622.

It is an arithmetic number, because the mean of its divisors is an integer number (72618622).

Almost surely, 2^145237243 is an apocalyptic number.

145237243 is a deficient number, since it is larger than the sum of its proper divisors (1).

145237243 is an equidigital number, since it uses as much as digits as its factorization.

145237243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 31.

The square root of 145237243 is about 12051.4415320326. The cubic root of 145237243 is about 525.6451545615.

Adding to 145237243 its reverse (342732541), we get a palindrome (487969784).

The spelling of 145237243 in words is "one hundred forty-five million, two hundred thirty-seven thousand, two hundred forty-three".