4123349921281 has 8 divisors (see below), whose sum is σ = 4180260149480. Its totient is φ = 4066451206272.

The previous prime is 4123349921209. The next prime is 4123349921287. The reversal of 4123349921281 is 1821299433214.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2663097610000 + 1460252311281 = 1631900^2 + 1208409^2 .

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 4123349921281 - 2⁷ = 4123349921153 is a prime.

It is a super-2 number, since 2×4123349921281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4123349921287) 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 7 ways as a sum of consecutive naturals, for example, 2155830 + ... + 3590863.

It is an arithmetic number, because the mean of its divisors is an integer number (522532518685).

Almost surely, 2^{4123349921281} is an apocalyptic number.

It is an amenable number.

4123349921281 is a deficient number, since it is larger than the sum of its proper divisors (56910228199).

4123349921281 is an equidigital number, since it uses as much as digits as its factorization.

4123349921281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5756595.

The product of its digits is 746496, while the sum is 49.

The spelling of 4123349921281 in words is "four trillion, one hundred twenty-three billion, three hundred forty-nine million, nine hundred twenty-one thousand, two hundred eighty-one".