123013430 has 16 divisors (see below), whose sum is σ = 231051744. Its totient is φ = 47065920.

The previous prime is 123013421. The next prime is 123013433. The reversal of 123013430 is 34310321.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123013399 and 123013408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123013433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 267191 + ... + 267650.

It is an arithmetic number, because the mean of its divisors is an integer number (14440734).

Almost surely, 2^123013430 is an apocalyptic number.

123013430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123013430 is a deficient number, since it is larger than the sum of its proper divisors (108038314).

123013430 is a wasteful number, since it uses less digits than its factorization.

123013430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534871.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 123013430 is about 11091.1419610426. The cubic root of 123013430 is about 497.3370829227.

Adding to 123013430 its reverse (34310321), we get a palindrome (157323751).

The spelling of 123013430 in words is "one hundred twenty-three million, thirteen thousand, four hundred thirty".