126105786 has 12 divisors (see below), whose sum is σ = 273229242. Its totient is φ = 42035256.

The previous prime is 126105781. The next prime is 126105809. The reversal of 126105786 is 687501621.

It can be written as a sum of positive squares in only one way, i.e., 111703761 + 14402025 = 10569^2 + 3795^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 126105786.

It is not an unprimeable number, because it can be changed into a prime (126105781) 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 5 ways as a sum of consecutive naturals, for example, 3502921 + ... + 3502956.

Almost surely, 2^126105786 is an apocalyptic number.

126105786 is an abundant number, since it is smaller than the sum of its proper divisors (147123456).

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

126105786 is a wasteful number, since it uses less digits than its factorization.

126105786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7005885 (or 7005882 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 126105786 is about 11229.6832546604. The cubic root of 126105786 is about 501.4700549742.

The spelling of 126105786 in words is "one hundred twenty-six million, one hundred five thousand, seven hundred eighty-six".