145840017 has 8 divisors (see below), whose sum is σ = 194743296. Its totient is φ = 97081712.

The previous prime is 145840003. The next prime is 145840021. The reversal of 145840017 is 710048541.

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

It is a cyclic number.

It is not a de Polignac number, because 145840017 - 2⁴ = 145840001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145840087) 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, 33873 + ... + 37934.

It is an arithmetic number, because the mean of its divisors is an integer number (24342912).

Almost surely, 2^145840017 is an apocalyptic number.

It is an amenable number.

145840017 is a deficient number, since it is larger than the sum of its proper divisors (48903279).

145840017 is an equidigital number, since it uses as much as digits as its factorization.

145840017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72487.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 145840017 is about 12076.4240154112. The cubic root of 145840017 is about 526.3713409089.

Adding to 145840017 its reverse (710048541), we get a palindrome (855888558).

The spelling of 145840017 in words is "one hundred forty-five million, eight hundred forty thousand, seventeen".