100872041 has 4 divisors (see below), whose sum is σ = 101247300. Its totient is φ = 100496784.

The previous prime is 100872017. The next prime is 100872073. The reversal of 100872041 is 140278001.

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 17606416 + 83265625 = 4196^2 + 9125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100872041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100871998 and 100872016.

It is not an unprimeable number, because it can be changed into a prime (100872001) 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, 187226 + ... + 187763.

It is an arithmetic number, because the mean of its divisors is an integer number (25311825).

Almost surely, 2^100872041 is an apocalyptic number.

It is an amenable number.

100872041 is a deficient number, since it is larger than the sum of its proper divisors (375259).

100872041 is an equidigital number, since it uses as much as digits as its factorization.

100872041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375258.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 100872041 is about 10043.5074052843. The cubic root of 100872041 is about 465.5041989282.

The spelling of 100872041 in words is "one hundred million, eight hundred seventy-two thousand, forty-one".