145840207 has 8 divisors (see below), whose sum is σ = 147026880. Its totient is φ = 144658080.

The previous prime is 145840193. The next prime is 145840237. The reversal of 145840207 is 702048541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145840207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145840237) 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 7 ways as a sum of consecutive naturals, for example, 91338 + ... + 92920.

It is an arithmetic number, because the mean of its divisors is an integer number (18378360).

Almost surely, 2^145840207 is an apocalyptic number.

145840207 is a deficient number, since it is larger than the sum of its proper divisors (1186673).

145840207 is a wasteful number, since it uses less digits than its factorization.

145840207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 145840207 is about 12076.4318819757. The cubic root of 145840207 is about 526.3715694939.

Adding to 145840207 its reverse (702048541), we get a palindrome (847888748).

The spelling of 145840207 in words is "one hundred forty-five million, eight hundred forty thousand, two hundred seven".