126316389 has 32 divisors (see below), whose sum is σ = 181440000. Its totient is φ = 77937984.

The previous prime is 126316387. The next prime is 126316397. The reversal of 126316389 is 983613621.

It is not a de Polignac number, because 126316389 - 2¹ = 126316387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126316387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 847687 + ... + 847835.

It is an arithmetic number, because the mean of its divisors is an integer number (5670000).

Almost surely, 2^126316389 is an apocalyptic number.

126316389 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

126316389 is a deficient number, since it is larger than the sum of its proper divisors (55123611).

126316389 is a wasteful number, since it uses less digits than its factorization.

126316389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417.

The product of its digits is 46656, while the sum is 39.

The square root of 126316389 is about 11239.0564105711. The cubic root of 126316389 is about 501.7490597788.

The spelling of 126316389 in words is "one hundred twenty-six million, three hundred sixteen thousand, three hundred eighty-nine".