421004144123 has 2 divisors, whose sum is σ = 421004144124. Its totient is φ = 421004144122.

The previous prime is 421004144063. The next prime is 421004144153. The reversal of 421004144123 is 321441400124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 421004144123 - 2¹⁶ = 421004078587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421004144092 and 421004144101.

It is not a weakly prime, because it can be changed into another prime (421004144153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210502072061 + 210502072062.

It is an arithmetic number, because the mean of its divisors is an integer number (210502072062).

Almost surely, 2^421004144123 is an apocalyptic number.

421004144123 is a deficient number, since it is larger than the sum of its proper divisors (1).

421004144123 is an equidigital number, since it uses as much as digits as its factorization.

421004144123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 421004144123 its reverse (321441400124), we get a palindrome (742445544247).

The spelling of 421004144123 in words is "four hundred twenty-one billion, four million, one hundred forty-four thousand, one hundred twenty-three".