126389131 has 8 divisors (see below), whose sum is σ = 138006000. Its totient is φ = 114793440.

The previous prime is 126389099. The next prime is 126389147. The reversal of 126389131 is 131983621.

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

It is a cyclic number.

It is not a de Polignac number, because 126389131 - 2⁵ = 126389099 is a prime.

It is a super-2 number, since 2×126389131² = 31948424869870322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126389161) 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, 8845 + ... + 18193.

It is an arithmetic number, because the mean of its divisors is an integer number (17250750).

Almost surely, 2^126389131 is an apocalyptic number.

126389131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

126389131 is a deficient number, since it is larger than the sum of its proper divisors (11616869).

126389131 is a wasteful number, since it uses less digits than its factorization.

126389131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10589.

The product of its digits is 7776, while the sum is 34.

The square root of 126389131 is about 11242.2920705700. The cubic root of 126389131 is about 501.8453556132.

The spelling of 126389131 in words is "one hundred twenty-six million, three hundred eighty-nine thousand, one hundred thirty-one".