105250032421 has 4 divisors (see below), whose sum is σ = 105254639244. Its totient is φ = 105245425600.

The previous prime is 105250032397. The next prime is 105250032431. The reversal of 105250032421 is 124230052501.

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 30376655521 + 74873376900 = 174289^2 + 273630^2 .

It is a cyclic number.

It is not a de Polignac number, because 105250032421 - 2²⁷ = 105115814693 is a prime.

It is a super-2 number, since 2×105250032421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105250032431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2268970 + ... + 2314891.

It is an arithmetic number, because the mean of its divisors is an integer number (26313659811).

Almost surely, 2^105250032421 is an apocalyptic number.

It is an amenable number.

105250032421 is a deficient number, since it is larger than the sum of its proper divisors (4606823).

105250032421 is an equidigital number, since it uses as much as digits as its factorization.

105250032421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4606822.

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 105250032421 its reverse (124230052501), we get a palindrome (229480084922).

The spelling of 105250032421 in words is "one hundred five billion, two hundred fifty million, thirty-two thousand, four hundred twenty-one".