126123644120 has 64 divisors (see below), whose sum is σ = 286385172480. Its totient is φ = 49987034496.

The previous prime is 126123644093. The next prime is 126123644131. The reversal of 126123644120 is 21446321621.

It is a super-2 number, since 2×126123644120² (a number of 23 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 3982187 + ... + 4013733.

It is an arithmetic number, because the mean of its divisors is an integer number (4474768320).

Almost surely, 2^126123644120 is an apocalyptic number.

126123644120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126123644120 is an abundant number, since it is smaller than the sum of its proper divisors (160261528360).

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

126123644120 is a wasteful number, since it uses less digits than its factorization.

126123644120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32472 (or 32468 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

Adding to 126123644120 its reverse (21446321621), we get a palindrome (147569965741).

The spelling of 126123644120 in words is "one hundred twenty-six billion, one hundred twenty-three million, six hundred forty-four thousand, one hundred twenty".