421454123 has 16 divisors (see below), whose sum is σ = 458524800. Its totient is φ = 385852416.

The previous prime is 421454069. The next prime is 421454147. The reversal of 421454123 is 321454124.

It is a cyclic number.

It is not a de Polignac number, because 421454123 - 2¹⁰ = 421453099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421454092 and 421454101.

It is not an unprimeable number, because it can be changed into a prime (421454023) 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, 136703 + ... + 139751.

It is an arithmetic number, because the mean of its divisors is an integer number (28657800).

Almost surely, 2^421454123 is an apocalyptic number.

421454123 is a deficient number, since it is larger than the sum of its proper divisors (37070677).

421454123 is a wasteful number, since it uses less digits than its factorization.

421454123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3286.

The product of its digits is 3840, while the sum is 26.

The square root of 421454123 is about 20529.3478464368. The cubic root of 421454123 is about 749.7505084219.

Subtracting from 421454123 its reverse (321454124), we obtain a palindrome (99999999).

The spelling of 421454123 in words is "four hundred twenty-one million, four hundred fifty-four thousand, one hundred twenty-three".