100305745 has 8 divisors (see below), whose sum is σ = 120609216. Its totient is φ = 80083056.

The previous prime is 100305707. The next prime is 100305773. The reversal of 100305745 is 547503001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100305745 - 2¹⁷ = 100174673 is a prime.

It is a super-2 number, since 2×100305745² = 20122484960010050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17427 + ... + 22456.

It is an arithmetic number, because the mean of its divisors is an integer number (15076152).

Almost surely, 2^100305745 is an apocalyptic number.

It is an amenable number.

100305745 is a deficient number, since it is larger than the sum of its proper divisors (20303471).

100305745 is an equidigital number, since it uses as much as digits as its factorization.

100305745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40391.

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 100305745 is about 10015.2755828285. The cubic root of 100305745 is about 464.6314495981.

Adding to 100305745 its reverse (547503001), we get a palindrome (647808746).

The spelling of 100305745 in words is "one hundred million, three hundred five thousand, seven hundred forty-five".