105212141 has 4 divisors (see below), whose sum is σ = 106177500. Its totient is φ = 104246784.

The previous prime is 105212123. The next prime is 105212147. The reversal of 105212141 is 141212501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 141212501 = 107 ⋅1319743.

It can be written as a sum of positive squares in 2 ways, for example, as 38316100 + 66896041 = 6190^2 + 8179^2 .

It is a cyclic number.

It is not a de Polignac number, because 105212141 - 2⁶ = 105212077 is a prime.

It is a super-2 number, since 2×105212141² = 22139189227607762, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105212147) 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, 482516 + ... + 482733.

It is an arithmetic number, because the mean of its divisors is an integer number (26544375).

Almost surely, 2^105212141 is an apocalyptic number.

It is an amenable number.

105212141 is a deficient number, since it is larger than the sum of its proper divisors (965359).

105212141 is an equidigital number, since it uses as much as digits as its factorization.

105212141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 965358.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 105212141 is about 10257.2969636255. The cubic root of 105212141 is about 472.0869037653.

Adding to 105212141 its reverse (141212501), we get a palindrome (246424642).

The spelling of 105212141 in words is "one hundred five million, two hundred twelve thousand, one hundred forty-one".