105616421 has 8 divisors (see below), whose sum is σ = 112516320. Its totient is φ = 98850672.

The previous prime is 105616417. The next prime is 105616429. The reversal of 105616421 is 124616501.

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

It is a cyclic number.

It is not a de Polignac number, because 105616421 - 2² = 105616417 is a prime.

It is a super-2 number, since 2×105616421² = 22309656769698482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105616429) 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, 31910 + ... + 35063.

It is an arithmetic number, because the mean of its divisors is an integer number (14064540).

Almost surely, 2^105616421 is an apocalyptic number.

It is an amenable number.

105616421 is a deficient number, since it is larger than the sum of its proper divisors (6899899).

105616421 is an equidigital number, since it uses as much as digits as its factorization.

105616421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67075.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 105616421 is about 10276.9850150713. The cubic root of 105616421 is about 472.6907990855.

The spelling of 105616421 in words is "one hundred five million, six hundred sixteen thousand, four hundred twenty-one".