126656780 has 24 divisors (see below), whose sum is σ = 268725408. Its totient is φ = 50139648.

The previous prime is 126656779. The next prime is 126656797. The reversal of 126656780 is 87656621.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30704 + ... + 34583.

It is an arithmetic number, because the mean of its divisors is an integer number (11196892).

Almost surely, 2^126656780 is an apocalyptic number.

126656780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126656780 is an abundant number, since it is smaller than the sum of its proper divisors (142068628).

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

126656780 is a wasteful number, since it uses less digits than its factorization.

126656780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65393 (or 65391 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 126656780 is about 11254.1894421589. The cubic root of 126656780 is about 502.1993515210.

The spelling of 126656780 in words is "one hundred twenty-six million, six hundred fifty-six thousand, seven hundred eighty".