126878559 has 8 divisors (see below), whose sum is σ = 173297712. Its totient is φ = 82522560.

The previous prime is 126878551. The next prime is 126878573. The reversal of 126878559 is 955878621.

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

It is not a de Polignac number, because 126878559 - 2³ = 126878551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126878551) 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, 515644 + ... + 515889.

It is an arithmetic number, because the mean of its divisors is an integer number (21662214).

Almost surely, 2^126878559 is an apocalyptic number.

126878559 is a deficient number, since it is larger than the sum of its proper divisors (46419153).

126878559 is a wasteful number, since it uses less digits than its factorization.

126878559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031577.

The product of its digits is 1209600, while the sum is 51.

The square root of 126878559 is about 11264.0383078184. The cubic root of 126878559 is about 502.4923015578.

The spelling of 126878559 in words is "one hundred twenty-six million, eight hundred seventy-eight thousand, five hundred fifty-nine".