105271139 has 8 divisors (see below), whose sum is σ = 106449552. Its totient is φ = 104097280.

The previous prime is 105271129. The next prime is 105271171. The reversal of 105271139 is 931172501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105271139 is a prime.

It is a super-2 number, since 2×105271139² = 22164025412714642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105271109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66224 + ... + 67794.

It is an arithmetic number, because the mean of its divisors is an integer number (13306194).

Almost surely, 2^105271139 is an apocalyptic number.

105271139 is a deficient number, since it is larger than the sum of its proper divisors (1178413).

105271139 is a wasteful number, since it uses less digits than its factorization.

105271139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2277.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 105271139 is about 10260.1724644374. The cubic root of 105271139 is about 472.1751286236.

The spelling of 105271139 in words is "one hundred five million, two hundred seventy-one thousand, one hundred thirty-nine".