105142069 has 4 divisors (see below), whose sum is σ = 105227500. Its totient is φ = 105056640.

The previous prime is 105142061. The next prime is 105142073. The reversal of 105142069 is 960241501.

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

It can be written as a sum of positive squares in 2 ways, for example, as 83631025 + 21511044 = 9145^2 + 4638^2 .

It is a cyclic number.

It is not a de Polignac number, because 105142069 - 2³ = 105142061 is a prime.

It is a super-2 number, since 2×105142069² = 22109709347201522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105142061) 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, 40842 + ... + 43339.

It is an arithmetic number, because the mean of its divisors is an integer number (26306875).

Almost surely, 2^105142069 is an apocalyptic number.

It is an amenable number.

105142069 is a deficient number, since it is larger than the sum of its proper divisors (85431).

105142069 is an equidigital number, since it uses as much as digits as its factorization.

105142069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85430.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 105142069 is about 10253.8806800157. The cubic root of 105142069 is about 471.9820761292.

The spelling of 105142069 in words is "one hundred five million, one hundred forty-two thousand, sixty-nine".