145040237 has 2 divisors, whose sum is σ = 145040238. Its totient is φ = 145040236.

The previous prime is 145040221. The next prime is 145040267. The reversal of 145040237 is 732040541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144696841 + 343396 = 12029^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 145040237 - 2⁴ = 145040221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145040267) 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, 72520118 + 72520119.

It is an arithmetic number, because the mean of its divisors is an integer number (72520119).

Almost surely, 2^145040237 is an apocalyptic number.

It is an amenable number.

145040237 is a deficient number, since it is larger than the sum of its proper divisors (1).

145040237 is an equidigital number, since it uses as much as digits as its factorization.

145040237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 145040237 is about 12043.2652133879. The cubic root of 145040237 is about 525.4073778390.

Adding to 145040237 its reverse (732040541), we get a palindrome (877080778).

The spelling of 145040237 in words is "one hundred forty-five million, forty thousand, two hundred thirty-seven".