105039421 has 8 divisors (see below), whose sum is σ = 108910080. Its totient is φ = 101185392.

The previous prime is 105039419. The next prime is 105039433. The reversal of 105039421 is 124930501.

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 105039421 - 2¹ = 105039419 is a prime.

It is a super-2 number, since 2×105039421² = 22066559928030482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105039401) 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 7 ways as a sum of consecutive naturals, for example, 9516 + ... + 17338.

It is an arithmetic number, because the mean of its divisors is an integer number (13613760).

Almost surely, 2^105039421 is an apocalyptic number.

It is an amenable number.

105039421 is a deficient number, since it is larger than the sum of its proper divisors (3870659).

105039421 is an equidigital number, since it uses as much as digits as its factorization.

105039421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8315.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 105039421 is about 10248.8741332890. The cubic root of 105039421 is about 471.8284307126.

Adding to 105039421 its product of nonzero digits (1080), we get a palindrome (105040501).

Adding to 105039421 its reverse (124930501), we get a palindrome (229969922).

The spelling of 105039421 in words is "one hundred five million, thirty-nine thousand, four hundred twenty-one".