123411421 has 8 divisors (see below), whose sum is σ = 143432640. Its totient is φ = 103987968.

The previous prime is 123411413. The next prime is 123411437. The reversal of 123411421 is 124114321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123411421 - 2³ = 123411413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123411461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148996 + ... + 149821.

It is an arithmetic number, because the mean of its divisors is an integer number (17929080).

Almost surely, 2^123411421 is an apocalyptic number.

It is an amenable number.

123411421 is a deficient number, since it is larger than the sum of its proper divisors (20021219).

123411421 is an equidigital number, since it uses as much as digits as its factorization.

123411421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298883.

The product of its digits is 192, while the sum is 19.

The square root of 123411421 is about 11109.0693129533. The cubic root of 123411421 is about 497.8728580338.

Adding to 123411421 its reverse (124114321), we get a palindrome (247525742).

The spelling of 123411421 in words is "one hundred twenty-three million, four hundred eleven thousand, four hundred twenty-one".