100144145 has 4 divisors (see below), whose sum is σ = 120172980. Its totient is φ = 80115312.

The previous prime is 100144097. The next prime is 100144183. The reversal of 100144145 is 541441001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 35438209 + 64705936 = 5953^2 + 8044^2 .

It is a cyclic number.

It is not a de Polignac number, because 100144145 - 2⁶ = 100144081 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10014410 + ... + 10014419.

It is an arithmetic number, because the mean of its divisors is an integer number (30043245).

Almost surely, 2^100144145 is an apocalyptic number.

It is an amenable number.

100144145 is a deficient number, since it is larger than the sum of its proper divisors (20028835).

100144145 is an equidigital number, since it uses as much as digits as its factorization.

100144145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20028834.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 100144145 is about 10007.2046546476. The cubic root of 100144145 is about 464.3817968968.

Adding to 100144145 its reverse (541441001), we get a palindrome (641585146).

The spelling of 100144145 in words is "one hundred million, one hundred forty-four thousand, one hundred forty-five".