145023071 has 2 divisors, whose sum is σ = 145023072. Its totient is φ = 145023070.

The previous prime is 145023013. The next prime is 145023077. The reversal of 145023071 is 170320541.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145023071 - 2¹⁰ = 145022047 is a prime.

It is a super-2 number, since 2×145023071² = 42063382244542082, which contains 22 as substring.

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 (145023077) 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, 72511535 + 72511536.

It is an arithmetic number, because the mean of its divisors is an integer number (72511536).

Almost surely, 2^145023071 is an apocalyptic number.

145023071 is a deficient number, since it is larger than the sum of its proper divisors (1).

145023071 is an equidigital number, since it uses as much as digits as its factorization.

145023071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 145023071 is about 12042.5525118224. The cubic root of 145023071 is about 525.3866491109.

The spelling of 145023071 in words is "one hundred forty-five million, twenty-three thousand, seventy-one".