123605142303 has 4 divisors (see below), whose sum is σ = 164806856408. Its totient is φ = 82403428200.

The previous prime is 123605142293. The next prime is 123605142317. The reversal of 123605142303 is 303241506321.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 123605142303 - 2⁶ = 123605142239 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 (123605142343) 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, 20600857048 + ... + 20600857053.

It is an arithmetic number, because the mean of its divisors is an integer number (41201714102).

Almost surely, 2^123605142303 is an apocalyptic number.

123605142303 is a deficient number, since it is larger than the sum of its proper divisors (41201714105).

123605142303 is an equidigital number, since it uses as much as digits as its factorization.

123605142303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41201714104.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 123605142303 its reverse (303241506321), we get a palindrome (426846648624).

The spelling of 123605142303 in words is "one hundred twenty-three billion, six hundred five million, one hundred forty-two thousand, three hundred three".