105302021 has 8 divisors (see below), whose sum is σ = 114952800. Its totient is φ = 95664240.

The previous prime is 105301967. The next prime is 105302039. The reversal of 105302021 is 120203501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105302021 is a prime.

It is a super-2 number, since 2×105302021² = 22177031253368882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105301987 and 105302005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105307021) 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, 22850 + ... + 27068.

It is an arithmetic number, because the mean of its divisors is an integer number (14369100).

Almost surely, 2^105302021 is an apocalyptic number.

105302021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

105302021 is a deficient number, since it is larger than the sum of its proper divisors (9650779).

105302021 is a wasteful number, since it uses less digits than its factorization.

105302021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6499.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 105302021 is about 10261.6772995451. The cubic root of 105302021 is about 472.2212960310.

Adding to 105302021 its reverse (120203501), we get a palindrome (225505522).

The spelling of 105302021 in words is "one hundred five million, three hundred two thousand, twenty-one".