105435425421 has 12 divisors (see below), whose sum is σ = 153774214048. Its totient is φ = 69607853064.

The previous prime is 105435425419. The next prime is 105435425437. The reversal of 105435425421 is 124524534501.

105435425421 is a `hidden beast` number, since 1 + 0 + 5 + 43 + 542 + 54 + 21 = 666.

It is not a de Polignac number, because 105435425421 - 2¹ = 105435425419 is a prime.

It is a super-2 number, since 2×105435425421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105435424421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56868235 + ... + 56870088.

Almost surely, 2^105435425421 is an apocalyptic number.

It is an amenable number.

105435425421 is a deficient number, since it is larger than the sum of its proper divisors (48338788627).

105435425421 is a wasteful number, since it uses less digits than its factorization.

105435425421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113738432 (or 113738429 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 105435425421 its reverse (124524534501), we get a palindrome (229959959922).

The spelling of 105435425421 in words is "one hundred five billion, four hundred thirty-five million, four hundred twenty-five thousand, four hundred twenty-one".