105240132 has 72 divisors (see below), whose sum is σ = 283046400. Its totient is φ = 32855808.

The previous prime is 105240131. The next prime is 105240169. The reversal of 105240132 is 231042501.

105240132 is a `hidden beast` number, since 10 + 524 + 0 + 132 = 666.

It is a super-2 number, since 2×105240132² = 22150970766754848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (105240131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 219469 + ... + 219947.

It is an arithmetic number, because the mean of its divisors is an integer number (3931200).

Almost surely, 2^105240132 is an apocalyptic number.

105240132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 105240132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141523200).

105240132 is an abundant number, since it is smaller than the sum of its proper divisors (177806268).

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

105240132 is a wasteful number, since it uses less digits than its factorization.

105240132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 105240132 is about 10258.6613161757. The cubic root of 105240132 is about 472.1287652613.

Adding to 105240132 its reverse (231042501), we get a palindrome (336282633).

The spelling of 105240132 in words is "one hundred five million, two hundred forty thousand, one hundred thirty-two".