145442543 has 2 divisors, whose sum is σ = 145442544. Its totient is φ = 145442542.

The previous prime is 145442519. The next prime is 145442573. The reversal of 145442543 is 345244541.

It is a weak prime.

It is an emirp because it is prime and its reverse (345244541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145442543 - 2¹⁴ = 145426159 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145442513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72721271 + 72721272.

It is an arithmetic number, because the mean of its divisors is an integer number (72721272).

Almost surely, 2^145442543 is an apocalyptic number.

145442543 is a deficient number, since it is larger than the sum of its proper divisors (1).

145442543 is an equidigital number, since it uses as much as digits as its factorization.

145442543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38400, while the sum is 32.

The square root of 145442543 is about 12059.9561773665. The cubic root of 145442543 is about 525.8927130623.

The spelling of 145442543 in words is "one hundred forty-five million, four hundred forty-two thousand, five hundred forty-three".