145342243 has 2 divisors, whose sum is σ = 145342244. Its totient is φ = 145342242.

The previous prime is 145342207. The next prime is 145342247. The reversal of 145342243 is 342243541.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145342243 - 2⁹ = 145341731 is a prime.

It is a super-2 number, since 2×145342243² = 42248735200542098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145342247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72671121 + 72671122.

It is an arithmetic number, because the mean of its divisors is an integer number (72671122).

Almost surely, 2^145342243 is an apocalyptic number.

145342243 is a deficient number, since it is larger than the sum of its proper divisors (1).

145342243 is an equidigital number, since it uses as much as digits as its factorization.

145342243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 28.

The square root of 145342243 is about 12055.7970702895. The cubic root of 145342243 is about 525.7717966560.

Adding to 145342243 its reverse (342243541), we get a palindrome (487585784).

The spelling of 145342243 in words is "one hundred forty-five million, three hundred forty-two thousand, two hundred forty-three".