421302124123 has 4 divisors (see below), whose sum is σ = 421327363968. Its totient is φ = 421276884280.

The previous prime is 421302124121. The next prime is 421302124129. The reversal of 421302124123 is 321421203124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421302124123 - 2¹ = 421302124121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421302124121) 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 3 ways as a sum of consecutive naturals, for example, 12594868 + ... + 12628273.

It is an arithmetic number, because the mean of its divisors is an integer number (105331840992).

Almost surely, 2^421302124123 is an apocalyptic number.

421302124123 is a deficient number, since it is larger than the sum of its proper divisors (25239845).

421302124123 is a wasteful number, since it uses less digits than its factorization.

421302124123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25239844.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 421302124123 its reverse (321421203124), we get a palindrome (742723327247).

The spelling of 421302124123 in words is "four hundred twenty-one billion, three hundred two million, one hundred twenty-four thousand, one hundred twenty-three".