145417243 has 2 divisors, whose sum is σ = 145417244. Its totient is φ = 145417242.

The previous prime is 145417211. The next prime is 145417267. The reversal of 145417243 is 342714541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145417243 - 2⁵ = 145417211 is a prime.

It is a super-2 number, since 2×145417243² = 42292349123442098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145417343) 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, 72708621 + 72708622.

It is an arithmetic number, because the mean of its divisors is an integer number (72708622).

Almost surely, 2^145417243 is an apocalyptic number.

145417243 is a deficient number, since it is larger than the sum of its proper divisors (1).

145417243 is an equidigital number, since it uses as much as digits as its factorization.

145417243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 31.

The square root of 145417243 is about 12058.9072058790. The cubic root of 145417243 is about 525.8622179565.

The spelling of 145417243 in words is "one hundred forty-five million, four hundred seventeen thousand, two hundred forty-three".