105072999 has 4 divisors (see below), whose sum is σ = 140097336. Its totient is φ = 70048664.

The previous prime is 105072997. The next prime is 105073013. The reversal of 105072999 is 999270501.

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 105072999 - 2¹ = 105072997 is a prime.

It is a super-2 number, since 2×105072999² = 22080670237708002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105072999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105072991) 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, 17512164 + ... + 17512169.

It is an arithmetic number, because the mean of its divisors is an integer number (35024334).

Almost surely, 2^105072999 is an apocalyptic number.

105072999 is a deficient number, since it is larger than the sum of its proper divisors (35024337).

105072999 is an equidigital number, since it uses as much as digits as its factorization.

105072999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35024336.

The product of its (nonzero) digits is 51030, while the sum is 42.

The square root of 105072999 is about 10250.5121335473. The cubic root of 105072999 is about 471.8787018934.

The spelling of 105072999 in words is "one hundred five million, seventy-two thousand, nine hundred ninety-nine".