105342139 has 16 divisors (see below), whose sum is σ = 127360512. Its totient is φ = 85174848.

The previous prime is 105342119. The next prime is 105342143. The reversal of 105342139 is 931243501.

It is a cyclic number.

It is not a de Polignac number, because 105342139 - 2⁷ = 105342011 is a prime.

It is a super-2 number, since 2×105342139² = 22193932498190642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105342109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7272 + ... + 16234.

It is an arithmetic number, because the mean of its divisors is an integer number (7960032).

Almost surely, 2^105342139 is an apocalyptic number.

105342139 is a deficient number, since it is larger than the sum of its proper divisors (22018373).

105342139 is an equidigital number, since it uses as much as digits as its factorization.

105342139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9066.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 105342139 is about 10263.6318620652. The cubic root of 105342139 is about 472.2812574273.

The spelling of 105342139 in words is "one hundred five million, three hundred forty-two thousand, one hundred thirty-nine".