145324121 has 2 divisors, whose sum is σ = 145324122. Its totient is φ = 145324120.

The previous prime is 145324111. The next prime is 145324147. The reversal of 145324121 is 121423541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133518025 + 11806096 = 11555^2 + 3436^2 .

It is an emirp because it is prime and its reverse (121423541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145324121 - 2⁶ = 145324057 is a prime.

It is a super-2 number, since 2×145324121² = 42238200288845282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (145324111) 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, 72662060 + 72662061.

It is an arithmetic number, because the mean of its divisors is an integer number (72662061).

Almost surely, 2^145324121 is an apocalyptic number.

It is an amenable number.

145324121 is a deficient number, since it is larger than the sum of its proper divisors (1).

145324121 is an equidigital number, since it uses as much as digits as its factorization.

145324121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 145324121 is about 12055.0454582303. The cubic root of 145324121 is about 525.7499437926.

Adding to 145324121 its reverse (121423541), we get a palindrome (266747662).

The spelling of 145324121 in words is "one hundred forty-five million, three hundred twenty-four thousand, one hundred twenty-one".