123420213 has 32 divisors (see below), whose sum is σ = 209638400. Its totient is φ = 70298928.

The previous prime is 123420203. The next prime is 123420229. The reversal of 123420213 is 312024321.

It is not a de Polignac number, because 123420213 - 2⁸ = 123419957 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 (123420203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70770 + ... + 72492.

It is an arithmetic number, because the mean of its divisors is an integer number (6551200).

Almost surely, 2^123420213 is an apocalyptic number.

It is an amenable number.

123420213 is a deficient number, since it is larger than the sum of its proper divisors (86218187).

123420213 is a wasteful number, since it uses less digits than its factorization.

123420213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2118 (or 2112 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 123420213 is about 11109.4650186226. The cubic root of 123420213 is about 497.8846808029.

Adding to 123420213 its reverse (312024321), we get a palindrome (435444534).

The spelling of 123420213 in words is "one hundred twenty-three million, four hundred twenty thousand, two hundred thirteen".