123203042140 has 24 divisors (see below), whose sum is σ = 258807602592. Its totient is φ = 49265747520.

The previous prime is 123203042117. The next prime is 123203042143. The reversal of 123203042140 is 41240302321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123203042143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 901419 + ... + 1029058.

It is an arithmetic number, because the mean of its divisors is an integer number (10783650108).

Almost surely, 2^123203042140 is an apocalyptic number.

123203042140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123203042140 is an abundant number, since it is smaller than the sum of its proper divisors (135604560452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123203042140 is a wasteful number, since it uses less digits than its factorization.

123203042140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1933677 (or 1933675 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 123203042140 its reverse (41240302321), we get a palindrome (164443344461).

The spelling of 123203042140 in words is "one hundred twenty-three billion, two hundred three million, forty-two thousand, one hundred forty".