126275520 has 448 divisors, whose sum is σ = 514990080. Its totient is φ = 25546752.

The previous prime is 126275491. The next prime is 126275533. The reversal of 126275520 is 25572621.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2936619 + ... + 2936661.

Almost surely, 2^126275520 is an apocalyptic number.

126275520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126275520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257495040).

126275520 is an abundant number, since it is smaller than the sum of its proper divisors (388714560).

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

126275520 is a wasteful number, since it uses less digits than its factorization.

126275520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 126275520 is about 11237.2380948345. The cubic root of 126275520 is about 501.6949411897.

The spelling of 126275520 in words is "one hundred twenty-six million, two hundred seventy-five thousand, five hundred twenty".