105139946 has 24 divisors (see below), whose sum is σ = 166963680. Its totient is φ = 49560896.

The previous prime is 105139907. The next prime is 105139963. The reversal of 105139946 is 649931501.

It is a super-2 number, since 2×105139946² = 22108816489765832, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 587285 + ... + 587463.

It is an arithmetic number, because the mean of its divisors is an integer number (6956820).

Almost surely, 2^105139946 is an apocalyptic number.

105139946 is a deficient number, since it is larger than the sum of its proper divisors (61823734).

105139946 is a wasteful number, since it uses less digits than its factorization.

105139946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 105139946 is about 10253.7771577112. Note that the first 3 decimals coincide. The cubic root of 105139946 is about 471.9788993967.

The spelling of 105139946 in words is "one hundred five million, one hundred thirty-nine thousand, nine hundred forty-six".