100492321 has 4 divisors (see below), whose sum is σ = 106403652. Its totient is φ = 94580992.

The previous prime is 100492289. The next prime is 100492331. The reversal of 100492321 is 123294001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91872225 + 8620096 = 9585^2 + 2936^2 .

It is a cyclic number.

It is not a de Polignac number, because 100492321 - 2⁵ = 100492289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100492292 and 100492301.

It is not an unprimeable number, because it can be changed into a prime (100492331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2955640 + ... + 2955673.

It is an arithmetic number, because the mean of its divisors is an integer number (26600913).

Almost surely, 2^100492321 is an apocalyptic number.

It is an amenable number.

100492321 is a deficient number, since it is larger than the sum of its proper divisors (5911331).

100492321 is an equidigital number, since it uses as much as digits as its factorization.

100492321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5911330.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 100492321 is about 10024.5858268559. The cubic root of 100492321 is about 464.9193539565.

The spelling of 100492321 in words is "one hundred million, four hundred ninety-two thousand, three hundred twenty-one".