105143955 has 24 divisors (see below), whose sum is σ = 195697872. Its totient is φ = 48065472.

The previous prime is 105143939. The next prime is 105143989. The reversal of 105143955 is 559341501.

It is not a de Polignac number, because 105143955 - 2⁴ = 105143939 is a prime.

It is a super-2 number, since 2×105143955² = 22110502546084050, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 70792 + ... + 72261.

It is an arithmetic number, because the mean of its divisors is an integer number (8154078).

Almost surely, 2^105143955 is an apocalyptic number.

105143955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

105143955 is a deficient number, since it is larger than the sum of its proper divisors (90553917).

105143955 is a wasteful number, since it uses less digits than its factorization.

105143955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143075 (or 143068 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 33.

The square root of 105143955 is about 10253.9726447850. The cubic root of 105143955 is about 471.9848981930.

The spelling of 105143955 in words is "one hundred five million, one hundred forty-three thousand, nine hundred fifty-five".