126145689 has 8 divisors (see below), whose sum is σ = 168262752. Its totient is φ = 84062880.

The previous prime is 126145673. The next prime is 126145709. The reversal of 126145689 is 986541621.

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

It is not a de Polignac number, because 126145689 - 2⁴ = 126145673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126145689.

It is not an unprimeable number, because it can be changed into a prime (126145289) 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 7 ways as a sum of consecutive naturals, for example, 1837 + ... + 15989.

It is an arithmetic number, because the mean of its divisors is an integer number (21032844).

Almost surely, 2^126145689 is an apocalyptic number.

It is an amenable number.

126145689 is a deficient number, since it is larger than the sum of its proper divisors (42117063).

126145689 is a wasteful number, since it uses less digits than its factorization.

126145689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17127.

The product of its digits is 103680, while the sum is 42.

The square root of 126145689 is about 11231.4597893595. The cubic root of 126145689 is about 501.5229419195.

The spelling of 126145689 in words is "one hundred twenty-six million, one hundred forty-five thousand, six hundred eighty-nine".