100045105 has 8 divisors (see below), whose sum is σ = 121156200. Its totient is φ = 79301376.

The previous prime is 100045087. The next prime is 100045117. The reversal of 100045105 is 501540001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12510369 + 87534736 = 3537^2 + 9356^2 .

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 100045105 - 2¹⁵ = 100012337 is a prime.

It is a super-2 number, since 2×100045105² = 20018046068922050, which contains 22 as substring.

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, 91240 + ... + 92329.

It is an arithmetic number, because the mean of its divisors is an integer number (15144525).

Almost surely, 2^100045105 is an apocalyptic number.

It is an amenable number.

100045105 is a deficient number, since it is larger than the sum of its proper divisors (21111095).

100045105 is a wasteful number, since it uses less digits than its factorization.

100045105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183683.

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 100045105 is about 10002.2549957497. The cubic root of 100045105 is about 464.2286591597.

Adding to 100045105 its reverse (501540001), we get a palindrome (601585106).

The spelling of 100045105 in words is "one hundred million, forty-five thousand, one hundred five".