123042232500 has 120 divisors (see below), whose sum is σ = 391372995552. Its totient is φ = 29828400000.

The previous prime is 123042232499. The next prime is 123042232507. The reversal of 123042232500 is 5232240321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123042232507) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 663211 + ... + 828210.

Almost surely, 2^123042232500 is an apocalyptic number.

123042232500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123042232500 is an abundant number, since it is smaller than the sum of its proper divisors (268330763052).

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

123042232500 is a wasteful number, since it uses less digits than its factorization.

123042232500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491459 (or 1491442 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 123042232500 its reverse (5232240321), we get a palindrome (128274472821).

The spelling of 123042232500 in words is "one hundred twenty-three billion, forty-two million, two hundred thirty-two thousand, five hundred".