105421530 has 64 divisors (see below), whose sum is σ = 258635520. Its totient is φ = 27495936.

The previous prime is 105421501. The next prime is 105421531. The reversal of 105421530 is 35124501.

It is a super-2 number, since 2×105421530² = 22227397975081800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 105421497 and 105421506.

It is not an unprimeable number, because it can be changed into a prime (105421531) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 336654 + ... + 336966.

It is an arithmetic number, because the mean of its divisors is an integer number (4041180).

Almost surely, 2^105421530 is an apocalyptic number.

105421530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

105421530 is an abundant number, since it is smaller than the sum of its proper divisors (153213990).

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

105421530 is a wasteful number, since it uses less digits than its factorization.

105421530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 105421530 is about 10267.4987216946. The cubic root of 105421530 is about 472.3998724034.

The spelling of 105421530 in words is "one hundred five million, four hundred twenty-one thousand, five hundred thirty".