126686090 has 8 divisors (see below), whose sum is σ = 228034980. Its totient is φ = 50674432.

The previous prime is 126686089. The next prime is 126686099. The reversal of 126686090 is 90686621.

It can be written as a sum of positive squares in 2 ways, for example, as 124255609 + 2430481 = 11147^2 + 1559^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126686099) 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 3 ways as a sum of consecutive naturals, for example, 6334295 + ... + 6334314.

Almost surely, 2^126686090 is an apocalyptic number.

126686090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126686090 is a deficient number, since it is larger than the sum of its proper divisors (101348890).

126686090 is a wasteful number, since it uses less digits than its factorization.

126686090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12668616.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 126686090 is about 11255.4915485731. The cubic root of 126686090 is about 502.2380869858.

The spelling of 126686090 in words is "one hundred twenty-six million, six hundred eighty-six thousand, ninety".