126781860 has 48 divisors (see below), whose sum is σ = 360001152. Its totient is φ = 33331200.

The previous prime is 126781849. The next prime is 126781867. The reversal of 126781860 is 68187621.

It is not an unprimeable number, because it can be changed into a prime (126781867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10621 + ... + 19140.

It is an arithmetic number, because the mean of its divisors is an integer number (7500024).

Almost surely, 2^126781860 is an apocalyptic number.

126781860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126781860 is an abundant number, since it is smaller than the sum of its proper divisors (233219292).

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

126781860 is a wasteful number, since it uses less digits than its factorization.

126781860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29844 (or 29842 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 126781860 is about 11259.7451125680. The cubic root of 126781860 is about 502.3646129162.

The spelling of 126781860 in words is "one hundred twenty-six million, seven hundred eighty-one thousand, eight hundred sixty".