145849723 has 2 divisors, whose sum is σ = 145849724. Its totient is φ = 145849722.

The previous prime is 145849663. The next prime is 145849727. The reversal of 145849723 is 327948541.

It is a strong prime.

It is an emirp because it is prime and its reverse (327948541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145849723 - 2⁹ = 145849211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145849723.

It is not a weakly prime, because it can be changed into another prime (145849727) 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, 72924861 + 72924862.

It is an arithmetic number, because the mean of its divisors is an integer number (72924862).

Almost surely, 2^145849723 is an apocalyptic number.

145849723 is a deficient number, since it is larger than the sum of its proper divisors (1).

145849723 is an equidigital number, since it uses as much as digits as its factorization.

145849723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 145849723 is about 12076.8258660958. The cubic root of 145849723 is about 526.3830177381.

The spelling of 145849723 in words is "one hundred forty-five million, eight hundred forty-nine thousand, seven hundred twenty-three".