421421303124123 has 16 divisors (see below), whose sum is σ = 568667207652096. Its totient is φ = 277561494586080.

The previous prime is 421421303124103. The next prime is 421421303124167. The reversal of 421421303124123 is 321421303124124.

It is not a de Polignac number, because 421421303124123 - 2²⁶ = 421421236015259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421421303124103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60146853 + ... + 66786873.

It is an arithmetic number, because the mean of its divisors is an integer number (35541700478256).

Almost surely, 2^{421421303124123} is an apocalyptic number.

421421303124123 is a deficient number, since it is larger than the sum of its proper divisors (147245904527973).

421421303124123 is a wasteful number, since it uses less digits than its factorization.

421421303124123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6894994.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 421421303124123 its reverse (321421303124124), we get a palindrome (742842606248247).

Subtracting from 421421303124123 its reverse (321421303124124), we obtain a palindrome (99999999999999).

The spelling of 421421303124123 in words is "four hundred twenty-one trillion, four hundred twenty-one billion, three hundred three million, one hundred twenty-four thousand, one hundred twenty-three".