105140723 has 4 divisors (see below), whose sum is σ = 105164688. Its totient is φ = 105116760.

The previous prime is 105140701. The next prime is 105140779. The reversal of 105140723 is 327041501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327041501 = 467 ⋅700303.

It is a cyclic number.

It is not a de Polignac number, because 105140723 - 2²⁰ = 104092147 is a prime.

It is a super-2 number, since 2×105140723² = 22109143265925458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105140023) 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, 3308 + ... + 14873.

It is an arithmetic number, because the mean of its divisors is an integer number (26291172).

Almost surely, 2^105140723 is an apocalyptic number.

105140723 is a deficient number, since it is larger than the sum of its proper divisors (23965).

105140723 is an equidigital number, since it uses as much as digits as its factorization.

105140723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23964.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 105140723 is about 10253.8150461182. The cubic root of 105140723 is about 471.9800620588.

The spelling of 105140723 in words is "one hundred five million, one hundred forty thousand, seven hundred twenty-three".