126686920 has 32 divisors (see below), whose sum is σ = 285405120. Its totient is φ = 50610880.

The previous prime is 126686909. The next prime is 126686953. The reversal of 126686920 is 29686621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42189 + ... + 45091.

It is an arithmetic number, because the mean of its divisors is an integer number (8918910).

Almost surely, 2^126686920 is an apocalyptic number.

126686920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126686920 is an abundant number, since it is smaller than the sum of its proper divisors (158718200).

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

126686920 is a wasteful number, since it uses less digits than its factorization.

126686920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005 (or 4001 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 126686920 is about 11255.5284194035. The cubic root of 126686920 is about 502.2391838089.

The spelling of 126686920 in words is "one hundred twenty-six million, six hundred eighty-six thousand, nine hundred twenty".