105239019 has 4 divisors (see below), whose sum is σ = 140318696. Its totient is φ = 70159344.

The previous prime is 105239003. The next prime is 105239033. The reversal of 105239019 is 910932501.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 105239019 - 2⁴ = 105239003 is a prime.

It is a super-2 number, since 2×105239019² = 22150502240164722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105239059) 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, 17539834 + ... + 17539839.

It is an arithmetic number, because the mean of its divisors is an integer number (35079674).

Almost surely, 2^105239019 is an apocalyptic number.

105239019 is a deficient number, since it is larger than the sum of its proper divisors (35079677).

105239019 is an equidigital number, since it uses as much as digits as its factorization.

105239019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35079676.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 105239019 is about 10258.6070691883. The cubic root of 105239019 is about 472.1271008735.

The spelling of 105239019 in words is "one hundred five million, two hundred thirty-nine thousand, nineteen".