100123245 has 12 divisors (see below), whose sum is σ = 173547036. Its totient is φ = 53399040.

The previous prime is 100123241. The next prime is 100123249. The reversal of 100123245 is 542321001.

It is an interprime number because it is at equal distance from previous prime (100123241) and next prime (100123249).

It can be written as a sum of positive squares in 2 ways, for example, as 16016004 + 84107241 = 4002^2 + 9171^2 .

It is not a de Polignac number, because 100123245 - 2² = 100123241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100123241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1112436 + ... + 1112525.

It is an arithmetic number, because the mean of its divisors is an integer number (14462253).

Almost surely, 2^100123245 is an apocalyptic number.

100123245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100123245 is a deficient number, since it is larger than the sum of its proper divisors (73423791).

100123245 is a wasteful number, since it uses less digits than its factorization.

100123245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224972 (or 2224969 counting only the distinct ones).

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

The square root of 100123245 is about 10006.1603525029. The cubic root of 100123245 is about 464.3494892839.

Adding to 100123245 its reverse (542321001), we get a palindrome (642444246).

The spelling of 100123245 in words is "one hundred million, one hundred twenty-three thousand, two hundred forty-five".