145730071 has 2 divisors, whose sum is σ = 145730072. Its totient is φ = 145730070.

The previous prime is 145730063. The next prime is 145730089. The reversal of 145730071 is 170037541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145730071 - 2³ = 145730063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145730021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72865035 + 72865036.

It is an arithmetic number, because the mean of its divisors is an integer number (72865036).

Almost surely, 2^145730071 is an apocalyptic number.

145730071 is a deficient number, since it is larger than the sum of its proper divisors (1).

145730071 is an equidigital number, since it uses as much as digits as its factorization.

145730071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 145730071 is about 12071.8710645865. The cubic root of 145730071 is about 526.2390338926.

The spelling of 145730071 in words is "one hundred forty-five million, seven hundred thirty thousand, seventy-one".