100006245 has 20 divisors (see below), whose sum is σ = 179271180. Its totient is φ = 53336448.

The previous prime is 100006241. The next prime is 100006273. The reversal of 100006245 is 542600001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37564641 + 62441604 = 6129^2 + 7902^2 .

It is not a de Polignac number, because 100006245 - 2² = 100006241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100006241) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 123060 + ... + 123869.

It is an arithmetic number, because the mean of its divisors is an integer number (8963559).

Almost surely, 2^100006245 is an apocalyptic number.

100006245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100006245 is a deficient number, since it is larger than the sum of its proper divisors (79264935).

100006245 is an equidigital number, since it uses as much as digits as its factorization.

100006245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246946 (or 246937 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 100006245 is about 10000.3122451251. The cubic root of 100006245 is about 464.1685454009.

Adding to 100006245 its reverse (542600001), we get a palindrome (642606246).

The spelling of 100006245 in words is "one hundred million, six thousand, two hundred forty-five".