123498463421 has 2 divisors, whose sum is σ = 123498463422. Its totient is φ = 123498463420.

The previous prime is 123498463399. The next prime is 123498463457. The reversal of 123498463421 is 124364894321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80663952196 + 42834511225 = 284014^2 + 206965^2 .

It is a cyclic number.

It is not a de Polignac number, because 123498463421 - 2³⁰ = 122424721597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123498463021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61749231710 + 61749231711.

It is an arithmetic number, because the mean of its divisors is an integer number (61749231711).

Almost surely, 2^123498463421 is an apocalyptic number.

It is an amenable number.

123498463421 is a deficient number, since it is larger than the sum of its proper divisors (1).

123498463421 is an equidigital number, since it uses as much as digits as its factorization.

123498463421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 47.

The spelling of 123498463421 in words is "one hundred twenty-three billion, four hundred ninety-eight million, four hundred sixty-three thousand, four hundred twenty-one".