105154243 has 4 divisors (see below), whose sum is σ = 105177688. Its totient is φ = 105130800.

The previous prime is 105154223. The next prime is 105154249. The reversal of 105154243 is 342451501.

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: 342451501 = 7 ⋅48921643.

It is a cyclic number.

It is not a de Polignac number, because 105154243 - 2⁹ = 105153731 is a prime.

It is a super-2 number, since 2×105154243² = 22114829641806098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105154249) 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, 2658 + ... + 14743.

It is an arithmetic number, because the mean of its divisors is an integer number (26294422).

Almost surely, 2^105154243 is an apocalyptic number.

105154243 is a deficient number, since it is larger than the sum of its proper divisors (23445).

105154243 is an equidigital number, since it uses as much as digits as its factorization.

105154243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23444.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 105154243 is about 10254.4742917421. The cubic root of 105154243 is about 472.0002917622. Note that the first 3 decimals are identical.

The spelling of 105154243 in words is "one hundred five million, one hundred fifty-four thousand, two hundred forty-three".