145205943 has 4 divisors (see below), whose sum is σ = 193607928. Its totient is φ = 96803960.

The previous prime is 145205941. The next prime is 145205947. The reversal of 145205943 is 349502541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145205943 - 2¹ = 145205941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145205941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24200988 + ... + 24200993.

It is an arithmetic number, because the mean of its divisors is an integer number (48401982).

Almost surely, 2^145205943 is an apocalyptic number.

145205943 is a deficient number, since it is larger than the sum of its proper divisors (48401985).

145205943 is an equidigital number, since it uses as much as digits as its factorization.

145205943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48401984.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 145205943 is about 12050.1428622237. The cubic root of 145205943 is about 525.6073913472.

The spelling of 145205943 in words is "one hundred forty-five million, two hundred five thousand, nine hundred forty-three".