105142844 has 24 divisors (see below), whose sum is σ = 192998400. Its totient is φ = 50024304.

The previous prime is 105142837. The next prime is 105142847. The reversal of 105142844 is 448241501.

It is a super-2 number, since 2×105142844² = 22110035288816672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105142847) 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, 15437 + ... + 21179.

It is an arithmetic number, because the mean of its divisors is an integer number (8041600).

Almost surely, 2^105142844 is an apocalyptic number.

It is an amenable number.

105142844 is a deficient number, since it is larger than the sum of its proper divisors (87855556).

105142844 is a wasteful number, since it uses less digits than its factorization.

105142844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5969 (or 5967 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 105142844 is about 10253.9184705165. The cubic root of 105142844 is about 471.9832357830.

The spelling of 105142844 in words is "one hundred five million, one hundred forty-two thousand, eight hundred forty-four".