126521752 has 64 divisors (see below), whose sum is σ = 288645120. Its totient is φ = 50754048.

The previous prime is 126521723. The next prime is 126521767. The reversal of 126521752 is 257125621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330153 + ... + 330535.

It is an arithmetic number, because the mean of its divisors is an integer number (4510080).

Almost surely, 2^126521752 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 126521752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144322560).

126521752 is an abundant number, since it is smaller than the sum of its proper divisors (162123368).

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

126521752 is a wasteful number, since it uses less digits than its factorization.

126521752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 756 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 126521752 is about 11248.1888319854. The cubic root of 126521752 is about 502.0208242024.

The spelling of 126521752 in words is "one hundred twenty-six million, five hundred twenty-one thousand, seven hundred fifty-two".