105282421 has 4 divisors (see below), whose sum is σ = 106765344. Its totient is φ = 103799500.

The previous prime is 105282413. The next prime is 105282449. The reversal of 105282421 is 124282501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105282421 - 2³ = 105282413 is a prime.

It is a super-2 number, since 2×105282421² = 22168776343242482, 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 (105283421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 741355 + ... + 741496.

It is an arithmetic number, because the mean of its divisors is an integer number (26691336).

Almost surely, 2^105282421 is an apocalyptic number.

It is an amenable number.

105282421 is a deficient number, since it is larger than the sum of its proper divisors (1482923).

105282421 is an equidigital number, since it uses as much as digits as its factorization.

105282421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482922.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 105282421 is about 10260.7222455342. The cubic root of 105282421 is about 472.1919958282.

The spelling of 105282421 in words is "one hundred five million, two hundred eighty-two thousand, four hundred twenty-one".