123033421 has 4 divisors (see below), whose sum is σ = 140609632. Its totient is φ = 105457212.

The previous prime is 123033367. The next prime is 123033431. The reversal of 123033421 is 124330321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 124330321 = 433 ⋅287137.

It is not a de Polignac number, because 123033421 - 2¹¹ = 123031373 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 (123033431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8788095 + ... + 8788108.

It is an arithmetic number, because the mean of its divisors is an integer number (35152408).

Almost surely, 2^123033421 is an apocalyptic number.

It is an amenable number.

123033421 is a deficient number, since it is larger than the sum of its proper divisors (17576211).

123033421 is an equidigital number, since it uses as much as digits as its factorization.

123033421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17576210.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 123033421 is about 11092.0431391155. The cubic root of 123033421 is about 497.3640223312.

Adding to 123033421 its reverse (124330321), we get a palindrome (247363742).

The spelling of 123033421 in words is "one hundred twenty-three million, thirty-three thousand, four hundred twenty-one".