105122723 has 4 divisors (see below), whose sum is σ = 105207480. Its totient is φ = 105037968.

The previous prime is 105122711. The next prime is 105122741. The reversal of 105122723 is 327221501.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327221501 = 67 ⋅4883903.

It is a cyclic number.

It is not a de Polignac number, because 105122723 - 2⁸ = 105122467 is a prime.

It is a super-2 number, since 2×105122723² = 22101573781869458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105122753) 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 3 ways as a sum of consecutive naturals, for example, 40490 + ... + 43007.

It is an arithmetic number, because the mean of its divisors is an integer number (26301870).

Almost surely, 2^105122723 is an apocalyptic number.

105122723 is a deficient number, since it is larger than the sum of its proper divisors (84757).

105122723 is an equidigital number, since it uses as much as digits as its factorization.

105122723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84756.

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

The square root of 105122723 is about 10252.9372864560. The cubic root of 105122723 is about 471.9531263301.

The spelling of 105122723 in words is "one hundred five million, one hundred twenty-two thousand, seven hundred twenty-three".