123013443 has 8 divisors (see below), whose sum is σ = 187449088. Its totient is φ = 70293384.

The previous prime is 123013441. The next prime is 123013459. The reversal of 123013443 is 344310321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 123013443 - 2¹ = 123013441 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 5857783 = 123013443 / (1 + 2 + 3 + 0 + 1 + 3 + 4 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123013441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2928871 + ... + 2928912.

It is an arithmetic number, because the mean of its divisors is an integer number (23431136).

Almost surely, 2^123013443 is an apocalyptic number.

123013443 is a deficient number, since it is larger than the sum of its proper divisors (64435645).

123013443 is an equidigital number, since it uses as much as digits as its factorization.

123013443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5857793.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 123013443 is about 11091.1425470959. The cubic root of 123013443 is about 497.3371004422.

Adding to 123013443 its reverse (344310321), we get a palindrome (467323764).

The spelling of 123013443 in words is "one hundred twenty-three million, thirteen thousand, four hundred forty-three".