100045200 has 120 divisors (see below), whose sum is σ = 322711488. Its totient is φ = 26493440.

The previous prime is 100045181. The next prime is 100045213. The reversal of 100045200 is 2540001.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 315442 + ... + 315758.

Almost surely, 2^100045200 is an apocalyptic number.

100045200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100045200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161355744).

100045200 is an abundant number, since it is smaller than the sum of its proper divisors (222666288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100045200 is a wasteful number, since it uses less digits than its factorization.

100045200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601 (or 590 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 100045200 is about 10002.2597446777. The cubic root of 100045200 is about 464.2288060991.

Adding to 100045200 its reverse (2540001), we get a palindrome (102585201).

The spelling of 100045200 in words is "one hundred million, forty-five thousand, two hundred".