105040450421 has 4 divisors (see below), whose sum is σ = 110568895200. Its totient is φ = 99512005644.

The previous prime is 105040450393. The next prime is 105040450429. The reversal of 105040450421 is 124054040501.

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 105040450421 - 2¹⁸ = 105040188277 is a prime.

It is a super-2 number, since 2×105040450421² (a number of 23 digits) 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 (105040450429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2764222361 + ... + 2764222398.

It is an arithmetic number, because the mean of its divisors is an integer number (27642223800).

Almost surely, 2^105040450421 is an apocalyptic number.

It is an amenable number.

105040450421 is a deficient number, since it is larger than the sum of its proper divisors (5528444779).

105040450421 is an equidigital number, since it uses as much as digits as its factorization.

105040450421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528444778.

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 105040450421 its reverse (124054040501), we get a palindrome (229094490922).

The spelling of 105040450421 in words is "one hundred five billion, forty million, four hundred fifty thousand, four hundred twenty-one".