105142859 has 4 divisors (see below), whose sum is σ = 106226904. Its totient is φ = 104058816.

The previous prime is 105142847. The next prime is 105142861. The reversal of 105142859 is 958241501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105142859 is a prime.

It is a super-2 number, since 2×105142859² = 22110041597387762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105142889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541877 + ... + 542070.

It is an arithmetic number, because the mean of its divisors is an integer number (26556726).

Almost surely, 2^105142859 is an apocalyptic number.

105142859 is a deficient number, since it is larger than the sum of its proper divisors (1084045).

105142859 is an equidigital number, since it uses as much as digits as its factorization.

105142859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084044.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 105142859 is about 10253.9192019442. The cubic root of 105142859 is about 471.9832582279.

The spelling of 105142859 in words is "one hundred five million, one hundred forty-two thousand, eight hundred fifty-nine".