105250340421 has 6 divisors (see below), whose sum is σ = 152028269510. Its totient is φ = 70166893608.

The previous prime is 105250340399. The next prime is 105250340501. The reversal of 105250340421 is 124043052501.

105250340421 is a `hidden beast` number, since 1 + 0 + 5 + 250 + 3 + 404 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 99957777921 + 5292562500 = 316161^2 + 72750^2 .

It is not a de Polignac number, because 105250340421 - 2⁵ = 105250340389 is a prime.

It is a super-2 number, since 2×105250340421² (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 (105250340021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5847241126 + ... + 5847241143.

Almost surely, 2^105250340421 is an apocalyptic number.

It is an amenable number.

105250340421 is a deficient number, since it is larger than the sum of its proper divisors (46777929089).

105250340421 is a wasteful number, since it uses less digits than its factorization.

105250340421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11694482275 (or 11694482272 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 105250340421 its reverse (124043052501), we get a palindrome (229293392922).

The spelling of 105250340421 in words is "one hundred five billion, two hundred fifty million, three hundred forty thousand, four hundred twenty-one".