126310639 has 8 divisors (see below), whose sum is σ = 155459360. Its totient is φ = 99938016.

The previous prime is 126310621. The next prime is 126310699. The reversal of 126310639 is 936013621.

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 126310639 - 2⁷ = 126310511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126310639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126310699) 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 7 ways as a sum of consecutive naturals, for example, 693924 + ... + 694105.

It is an arithmetic number, because the mean of its divisors is an integer number (19432420).

Almost surely, 2^126310639 is an apocalyptic number.

126310639 is a deficient number, since it is larger than the sum of its proper divisors (29148721).

126310639 is a wasteful number, since it uses less digits than its factorization.

126310639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388049.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 126310639 is about 11238.8006032672. The cubic root of 126310639 is about 501.7414463543.

The spelling of 126310639 in words is "one hundred twenty-six million, three hundred ten thousand, six hundred thirty-nine".