421311123 has 6 divisors (see below), whose sum is σ = 608560524. Its totient is φ = 280874076.

The previous prime is 421311113. The next prime is 421311131. The reversal of 421311123 is 321113124.

It is not a de Polignac number, because 421311123 - 2⁹ = 421310611 is a prime.

It is a super-2 number, since 2×421311123² = 355006124727042258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421311096 and 421311105.

It is not an unprimeable number, because it can be changed into a prime (421311103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23406165 + ... + 23406182.

It is an arithmetic number, because the mean of its divisors is an integer number (101426754).

Almost surely, 2^421311123 is an apocalyptic number.

421311123 is a deficient number, since it is larger than the sum of its proper divisors (187249401).

421311123 is a wasteful number, since it uses less digits than its factorization.

421311123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46812353 (or 46812350 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 421311123 is about 20525.8647320886. The cubic root of 421311123 is about 749.6657016817.

Adding to 421311123 its reverse (321113124), we get a palindrome (742424247).

The spelling of 421311123 in words is "four hundred twenty-one million, three hundred eleven thousand, one hundred twenty-three".