126115566 has 8 divisors (see below), whose sum is σ = 252231144. Its totient is φ = 42038520.

The previous prime is 126115547. The next prime is 126115579. The reversal of 126115566 is 665511621.

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

126115566 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10509625 + ... + 10509636.

It is an arithmetic number, because the mean of its divisors is an integer number (31528893).

Almost surely, 2^126115566 is an apocalyptic number.

126115566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

126115566 is a wasteful number, since it uses less digits than its factorization.

126115566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21019266.

The product of its digits is 10800, while the sum is 33.

The square root of 126115566 is about 11230.1186992836. The cubic root of 126115566 is about 501.4830182979.

The spelling of 126115566 in words is "one hundred twenty-six million, one hundred fifteen thousand, five hundred sixty-six".