126005680 has 20 divisors (see below), whose sum is σ = 292963392. Its totient is φ = 50402240.

The previous prime is 126005653. The next prime is 126005713. The reversal of 126005680 is 86500621.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 787456 + ... + 787615.

Almost surely, 2^126005680 is an apocalyptic number.

126005680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126005680 is an abundant number, since it is smaller than the sum of its proper divisors (166957712).

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

126005680 is a wasteful number, since it uses less digits than its factorization.

126005680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575084 (or 1575078 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 126005680 is about 11225.2251647795. The cubic root of 126005680 is about 501.3373265929.

The spelling of 126005680 in words is "one hundred twenty-six million, five thousand, six hundred eighty".