105140643 has 16 divisors (see below), whose sum is σ = 144294816. Its totient is φ = 68048640.

The previous prime is 105140639. The next prime is 105140647. The reversal of 105140643 is 346041501.

It is an interprime number because it is at equal distance from previous prime (105140639) and next prime (105140647).

It is not a de Polignac number, because 105140643 - 2² = 105140639 is a prime.

It is a super-2 number, since 2×105140643² = 22109109620906898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105140647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72655 + ... + 74087.

It is an arithmetic number, because the mean of its divisors is an integer number (9018426).

Almost surely, 2^105140643 is an apocalyptic number.

105140643 is a deficient number, since it is larger than the sum of its proper divisors (39154173).

105140643 is a wasteful number, since it uses less digits than its factorization.

105140643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 105140643 is about 10253.8111451304. The cubic root of 105140643 is about 471.9799423512.

The spelling of 105140643 in words is "one hundred five million, one hundred forty thousand, six hundred forty-three".