126821124 has 72 divisors (see below), whose sum is σ = 348391680. Its totient is φ = 38750400.

The previous prime is 126821111. The next prime is 126821129. The reversal of 126821124 is 421128621.

It is not an unprimeable number, because it can be changed into a prime (126821129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18214 + ... + 24194.

Almost surely, 2^126821124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126821124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174195840).

126821124 is an abundant number, since it is smaller than the sum of its proper divisors (221570556).

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

126821124 is a wasteful number, since it uses less digits than its factorization.

126821124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041 (or 6036 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 126821124 is about 11261.4885339372. The cubic root of 126821124 is about 502.4164678852.

Adding to 126821124 its reverse (421128621), we get a palindrome (547949745).

The spelling of 126821124 in words is "one hundred twenty-six million, eight hundred twenty-one thousand, one hundred twenty-four".