10243421123 has 8 divisors (see below), whose sum is σ = 11034247728. Its totient is φ = 9453004704.

The previous prime is 10243421119. The next prime is 10243421129. The reversal of 10243421123 is 32112434201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10243421123 - 2² = 10243421119 is a prime.

It is a super-2 number, since 2×10243421123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10243421129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49661 + ... + 151502.

It is an arithmetic number, because the mean of its divisors is an integer number (1379280966).

Almost surely, 2^10243421123 is an apocalyptic number.

10243421123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10243421123 is a deficient number, since it is larger than the sum of its proper divisors (790826605).

10243421123 is a wasteful number, since it uses less digits than its factorization.

10243421123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205093.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 10243421123 its reverse (32112434201), we get a palindrome (42355855324).

The spelling of 10243421123 in words is "ten billion, two hundred forty-three million, four hundred twenty-one thousand, one hundred twenty-three".