126686901 has 32 divisors (see below), whose sum is σ = 191296512. Its totient is φ = 73906560.

The previous prime is 126686891. The next prime is 126686909. The reversal of 126686901 is 109686621.

It is not a de Polignac number, because 126686901 - 2⁵ = 126686869 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 126686901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126686909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102976 + ... + 104198.

It is an arithmetic number, because the mean of its divisors is an integer number (5978016).

Almost surely, 2^126686901 is an apocalyptic number.

126686901 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

126686901 is a deficient number, since it is larger than the sum of its proper divisors (64609611).

126686901 is a wasteful number, since it uses less digits than its factorization.

126686901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 126686901 is about 11255.5275753738. The cubic root of 126686901 is about 502.2391587009.

The spelling of 126686901 in words is "one hundred twenty-six million, six hundred eighty-six thousand, nine hundred one".