126009678 has 16 divisors (see below), whose sum is σ = 266844240. Its totient is φ = 39532416.

The previous prime is 126009677. The next prime is 126009707. The reversal of 126009678 is 876900621.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126009677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617593 + ... + 617796.

It is an arithmetic number, because the mean of its divisors is an integer number (16677765).

Almost surely, 2^126009678 is an apocalyptic number.

126009678 is an abundant number, since it is smaller than the sum of its proper divisors (140834562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126009678 is a wasteful number, since it uses less digits than its factorization.

126009678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235411.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 126009678 is about 11225.4032444273. The cubic root of 126009678 is about 501.3426288021.

The spelling of 126009678 in words is "one hundred twenty-six million, nine thousand, six hundred seventy-eight".