123145244254 has 12 divisors (see below), whose sum is σ = 190868724432. Its totient is φ = 59586407580.

The previous prime is 123145244237. The next prime is 123145244333. The reversal of 123145244254 is 452442541321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32033782 + ... + 32037625.

It is an arithmetic number, because the mean of its divisors is an integer number (15905727036).

Almost surely, 2^123145244254 is an apocalyptic number.

123145244254 is a deficient number, since it is larger than the sum of its proper divisors (67723480178).

123145244254 is an equidigital number, since it uses as much as digits as its factorization.

123145244254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64071471 (or 64071440 counting only the distinct ones).

The product of its digits is 153600, while the sum is 37.

Adding to 123145244254 its reverse (452442541321), we get a palindrome (575587785575).

The spelling of 123145244254 in words is "one hundred twenty-three billion, one hundred forty-five million, two hundred forty-four thousand, two hundred fifty-four".