105402243 has 4 divisors (see below), whose sum is σ = 140536328. Its totient is φ = 70268160.

The previous prime is 105402239. The next prime is 105402251. The reversal of 105402243 is 342204501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342204501 = 3 ⋅114068167.

It is not a de Polignac number, because 105402243 - 2² = 105402239 is a prime.

It is a super-2 number, since 2×105402243² = 22219265658862098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105402203) 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, 17567038 + ... + 17567043.

It is an arithmetic number, because the mean of its divisors is an integer number (35134082).

Almost surely, 2^105402243 is an apocalyptic number.

105402243 is a deficient number, since it is larger than the sum of its proper divisors (35134085).

105402243 is an equidigital number, since it uses as much as digits as its factorization.

105402243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35134084.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 105402243 is about 10266.5594529034. The cubic root of 105402243 is about 472.3710619317.

Adding to 105402243 its reverse (342204501), we get a palindrome (447606744).

The spelling of 105402243 in words is "one hundred five million, four hundred two thousand, two hundred forty-three".