123010421 has 4 divisors (see below), whose sum is σ = 125627712. Its totient is φ = 120393132.

The previous prime is 123010409. The next prime is 123010429. The reversal of 123010421 is 124010321.

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.

It is not a de Polignac number, because 123010421 - 2⁶ = 123010357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123010396 and 123010405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123010429) 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, 1308575 + ... + 1308668.

It is an arithmetic number, because the mean of its divisors is an integer number (31406928).

Almost surely, 2^123010421 is an apocalyptic number.

It is an amenable number.

123010421 is a deficient number, since it is larger than the sum of its proper divisors (2617291).

123010421 is an equidigital number, since it uses as much as digits as its factorization.

123010421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617290.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 123010421 is about 11091.0063114219. The cubic root of 123010421 is about 497.3330278113. Note that the first 3 decimals are identical.

Adding to 123010421 its reverse (124010321), we get a palindrome (247020742).

The spelling of 123010421 in words is "one hundred twenty-three million, ten thousand, four hundred twenty-one".