123200400124 has 12 divisors (see below), whose sum is σ = 215654347048. Its totient is φ = 61584872400.

The previous prime is 123200400121. The next prime is 123200400133. The reversal of 123200400124 is 421004002321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123200400121) 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, 3813822 + ... + 3845989.

Almost surely, 2^123200400124 is an apocalyptic number.

It is an amenable number.

123200400124 is a deficient number, since it is larger than the sum of its proper divisors (92453946924).

123200400124 is a wasteful number, since it uses less digits than its factorization.

123200400124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7663836 (or 7663834 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 123200400124 its reverse (421004002321), we get a palindrome (544204402445).

The spelling of 123200400124 in words is "one hundred twenty-three billion, two hundred million, four hundred thousand, one hundred twenty-four".