123353421 has 16 divisors (see below), whose sum is σ = 166666368. Its totient is φ = 81144000.

The previous prime is 123353413. The next prime is 123353459. The reversal of 123353421 is 124353321.

It is not a de Polignac number, because 123353421 - 2³ = 123353413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123353391 and 123353400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123353401) 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, 127080 + ... + 128046.

It is an arithmetic number, because the mean of its divisors is an integer number (10416648).

Almost surely, 2^123353421 is an apocalyptic number.

It is an amenable number.

123353421 is a deficient number, since it is larger than the sum of its proper divisors (43312947).

123353421 is a wasteful number, since it uses less digits than its factorization.

123353421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492.

The product of its digits is 2160, while the sum is 24.

The square root of 123353421 is about 11106.4585264611. The cubic root of 123353421 is about 497.7948502598.

The spelling of 123353421 in words is "one hundred twenty-three million, three hundred fifty-three thousand, four hundred twenty-one".