145717423 has 2 divisors, whose sum is σ = 145717424. Its totient is φ = 145717422.

The previous prime is 145717409. The next prime is 145717427. The reversal of 145717423 is 324717541.

It is a strong prime.

It is an emirp because it is prime and its reverse (324717541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145717423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145717427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72858711 + 72858712.

It is an arithmetic number, because the mean of its divisors is an integer number (72858712).

Almost surely, 2^145717423 is an apocalyptic number.

145717423 is a deficient number, since it is larger than the sum of its proper divisors (1).

145717423 is an equidigital number, since it uses as much as digits as its factorization.

145717423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23520, while the sum is 34.

The square root of 145717423 is about 12071.3471907654. The cubic root of 145717423 is about 526.2238092520.

The spelling of 145717423 in words is "one hundred forty-five million, seven hundred seventeen thousand, four hundred twenty-three".