10123355421 has 6 divisors (see below), whose sum is σ = 14622624510. Its totient is φ = 6748903608.

The previous prime is 10123355357. The next prime is 10123355479. The reversal of 10123355421 is 12455332101.

10123355421 is a `hidden beast` number, since 1 + 0 + 1 + 233 + 5 + 5 + 421 = 666.

10123355421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9938096100 + 185259321 = 99690^2 + 13611^2 .

It is not a de Polignac number, because 10123355421 - 2⁶ = 10123355357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123355491) 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 5 ways as a sum of consecutive naturals, for example, 562408626 + ... + 562408643.

It is an arithmetic number, because the mean of its divisors is an integer number (2437104085).

Almost surely, 2^10123355421 is an apocalyptic number.

It is an amenable number.

10123355421 is a deficient number, since it is larger than the sum of its proper divisors (4499269089).

10123355421 is a wasteful number, since it uses less digits than its factorization.

10123355421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124817275 (or 1124817272 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 10123355421 its reverse (12455332101), we get a palindrome (22578687522).

The spelling of 10123355421 in words is "ten billion, one hundred twenty-three million, three hundred fifty-five thousand, four hundred twenty-one".