105442520 has 16 divisors (see below), whose sum is σ = 237245760. Its totient is φ = 42176992.

The previous prime is 105442507. The next prime is 105442531. The reversal of 105442520 is 25244501.

It is a happy number.

It is a super-2 number, since 2×105442520² = 22236250047900800, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 1317992 + ... + 1318071.

It is an arithmetic number, because the mean of its divisors is an integer number (14827860).

Almost surely, 2^105442520 is an apocalyptic number.

105442520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

105442520 is an abundant number, since it is smaller than the sum of its proper divisors (131803240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105442520 is a wasteful number, since it uses less digits than its factorization.

105442520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636074 (or 2636070 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 105442520 is about 10268.5208282401. The cubic root of 105442520 is about 472.4312227842.

The spelling of 105442520 in words is "one hundred five million, four hundred forty-two thousand, five hundred twenty".