100320245 has 4 divisors (see below), whose sum is σ = 120384300. Its totient is φ = 80256192.

The previous prime is 100320211. The next prime is 100320257. The reversal of 100320245 is 542023001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542023001 = 13 ⋅41694077.

It can be written as a sum of positive squares in 2 ways, for example, as 23600164 + 76720081 = 4858^2 + 8759^2 .

It is a cyclic number.

It is not a de Polignac number, because 100320245 - 2¹² = 100316149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10032020 + ... + 10032029.

It is an arithmetic number, because the mean of its divisors is an integer number (30096075).

Almost surely, 2^100320245 is an apocalyptic number.

It is an amenable number.

100320245 is a deficient number, since it is larger than the sum of its proper divisors (20064055).

100320245 is an equidigital number, since it uses as much as digits as its factorization.

100320245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20064054.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 100320245 is about 10015.9994508786. Note that the first 3 decimals coincide. The cubic root of 100320245 is about 464.6538372537.

Adding to 100320245 its reverse (542023001), we get a palindrome (642343246).

The spelling of 100320245 in words is "one hundred million, three hundred twenty thousand, two hundred forty-five".