126881520 has 40 divisors (see below), whose sum is σ = 393333456. Its totient is φ = 33835008.

The previous prime is 126881507. The next prime is 126881537. The reversal of 126881520 is 25188621.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264097 + ... + 264576.

Almost surely, 2^126881520 is an apocalyptic number.

126881520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126881520 is an abundant number, since it is smaller than the sum of its proper divisors (266451936).

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

126881520 is a wasteful number, since it uses less digits than its factorization.

126881520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528689 (or 528683 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 126881520 is about 11264.1697430392. The cubic root of 126881520 is about 502.4962104613.

The spelling of 126881520 in words is "one hundred twenty-six million, eight hundred eighty-one thousand, five hundred twenty".