145140299 has 4 divisors (see below), whose sum is σ = 146283264. Its totient is φ = 143997336.

The previous prime is 145140293. The next prime is 145140313. The reversal of 145140299 is 992041541.

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 145140299 - 2²⁰ = 144091723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145140293) 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 in 3 ways as a sum of consecutive naturals, for example, 571292 + ... + 571545.

It is an arithmetic number, because the mean of its divisors is an integer number (36570816).

Almost surely, 2^145140299 is an apocalyptic number.

145140299 is a deficient number, since it is larger than the sum of its proper divisors (1142965).

145140299 is a wasteful number, since it uses less digits than its factorization.

145140299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142964.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 145140299 is about 12047.4187691804. The cubic root of 145140299 is about 525.5281747268.

The spelling of 145140299 in words is "one hundred forty-five million, one hundred forty thousand, two hundred ninety-nine".