105162139 has 4 divisors (see below), whose sum is σ = 105198120. Its totient is φ = 105126160.

The previous prime is 105162107. The next prime is 105162173. The reversal of 105162139 is 931261501.

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

It is a cyclic number.

It is not a de Polignac number, because 105162139 - 2⁵ = 105162107 is a prime.

It is a super-2 number, since 2×105162139² = 22118150958110642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105162539) 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, 13177 + ... + 19594.

It is an arithmetic number, because the mean of its divisors is an integer number (26299530).

Almost surely, 2^105162139 is an apocalyptic number.

105162139 is a deficient number, since it is larger than the sum of its proper divisors (35981).

105162139 is an equidigital number, since it uses as much as digits as its factorization.

105162139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35980.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 105162139 is about 10254.8592871867. The cubic root of 105162139 is about 472.0121055858.

It can be divided in two parts, 1051 and 62139, that added together give a triangular number (63190 = T₃₅₅).

The spelling of 105162139 in words is "one hundred five million, one hundred sixty-two thousand, one hundred thirty-nine".