72103099 has 4 divisors (see below), whose sum is σ = 72170280. Its totient is φ = 72035920.

The previous prime is 72103079. The next prime is 72103139. The reversal of 72103099 is 99030127.

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 72103099 - 2⁵ = 72103067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72103099.

It is not an unprimeable number, because it can be changed into a prime (72103079) 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, 31954 + ... + 34135.

It is an arithmetic number, because the mean of its divisors is an integer number (18042570).

Almost surely, 2^72103099 is an apocalyptic number.

72103099 is a deficient number, since it is larger than the sum of its proper divisors (67181).

72103099 is a wasteful number, since it uses less digits than its factorization.

72103099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67180.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 72103099 is about 8491.3543678261. The cubic root of 72103099 is about 416.2152389456.

The spelling of 72103099 in words is "seventy-two million, one hundred three thousand, ninety-nine".