105721150 has 24 divisors (see below), whose sum is σ = 198201600. Its totient is φ = 41952960.

The previous prime is 105721123. The next prime is 105721151. The reversal of 105721150 is 51127501.

It is a super-2 number, since 2×105721150² = 22353923114645000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105721151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1975 + ... + 14674.

It is an arithmetic number, because the mean of its divisors is an integer number (8258400).

Almost surely, 2^105721150 is an apocalyptic number.

105721150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105721150 is a deficient number, since it is larger than the sum of its proper divisors (92480450).

105721150 is a wasteful number, since it uses less digits than its factorization.

105721150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16788 (or 16783 counting only the distinct ones).

The product of its (nonzero) digits is 350, while the sum is 22.

The square root of 105721150 is about 10282.0790699158. The cubic root of 105721150 is about 472.8469871744.

Adding to 105721150 its reverse (51127501), we get a palindrome (156848651).

The spelling of 105721150 in words is "one hundred five million, seven hundred twenty-one thousand, one hundred fifty".