100245321 has 24 divisors (see below), whose sum is σ = 162237504. Its totient is φ = 59110560.

The previous prime is 100245283. The next prime is 100245337. The reversal of 100245321 is 123542001.

100245321 is a `hidden beast` number, since 100 + 245 + 321 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-100245321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100245294 and 100245303.

It is not an unprimeable number, because it can be changed into a prime (100245371) 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 23 ways as a sum of consecutive naturals, for example, 10021 + ... + 17346.

It is an arithmetic number, because the mean of its divisors is an integer number (6759896).

Almost surely, 2^100245321 is an apocalyptic number.

100245321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100245321 is a deficient number, since it is larger than the sum of its proper divisors (61992183).

100245321 is a wasteful number, since it uses less digits than its factorization.

100245321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27421 (or 27418 counting only the distinct ones).

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

The square root of 100245321 is about 10012.2585364142. The cubic root of 100245321 is about 464.5381331418.

Adding to 100245321 its reverse (123542001), we get a palindrome (223787322).

The spelling of 100245321 in words is "one hundred million, two hundred forty-five thousand, three hundred twenty-one".