145041309 has 12 divisors (see below), whose sum is σ = 239433376. Its totient is φ = 82880712.

The previous prime is 145041257. The next prime is 145041311. The reversal of 145041309 is 903140541.

145041309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145041309 - 2¹¹ = 145039261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145041329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1151059 + ... + 1151184.

Almost surely, 2^145041309 is an apocalyptic number.

It is an amenable number.

145041309 is a deficient number, since it is larger than the sum of its proper divisors (94392067).

145041309 is a wasteful number, since it uses less digits than its factorization.

145041309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302256 (or 2302253 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 145041309 is about 12043.3097195082. The cubic root of 145041309 is about 525.4086722736.

The spelling of 145041309 in words is "one hundred forty-five million, forty-one thousand, three hundred nine".