123130423421 has 8 divisors (see below), whose sum is σ = 126050359680. Its totient is φ = 120222993088.

The previous prime is 123130423393. The next prime is 123130423477. The reversal of 123130423421 is 124324031321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123130423421 is a prime.

It is a super-2 number, since 2×123130423421² (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 (123130423121) 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 7 ways as a sum of consecutive naturals, for example, 3106556 + ... + 3145941.

It is an arithmetic number, because the mean of its divisors is an integer number (15756294960).

Almost surely, 2^123130423421 is an apocalyptic number.

It is an amenable number.

123130423421 is a deficient number, since it is larger than the sum of its proper divisors (2919936259).

123130423421 is an equidigital number, since it uses as much as digits as its factorization.

123130423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6252963.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 123130423421 its reverse (124324031321), we get a palindrome (247454454742).

The spelling of 123130423421 in words is "one hundred twenty-three billion, one hundred thirty million, four hundred twenty-three thousand, four hundred twenty-one".