105351421 has 8 divisors (see below), whose sum is σ = 122859200. Its totient is φ = 90300924.

The previous prime is 105351413. The next prime is 105351473. The reversal of 105351421 is 124153501.

It is a happy number.

It is not a de Polignac number, because 105351421 - 2³ = 105351413 is a prime.

It is a super-2 number, since 2×105351421² = 22197843813438482, 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 = 105351392 and 105351401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105351401) 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, 153231 + ... + 153916.

It is an arithmetic number, because the mean of its divisors is an integer number (15357400).

Almost surely, 2^105351421 is an apocalyptic number.

It is an amenable number.

105351421 is a deficient number, since it is larger than the sum of its proper divisors (17507779).

105351421 is an frugal number, since it uses more digits than its factorization.

105351421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307168 (or 307154 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 105351421 is about 10264.0840312227. The cubic root of 105351421 is about 472.2951283749.

The spelling of 105351421 in words is "one hundred five million, three hundred fifty-one thousand, four hundred twenty-one".