126401166 has 24 divisors (see below), whose sum is σ = 280239960. Its totient is φ = 41153616.

The previous prime is 126401159. The next prime is 126401183. The reversal of 126401166 is 661104621.

126401166 is a `hidden beast` number, since 1 + 2 + 640 + 1 + 16 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80881 + ... + 82428.

It is an arithmetic number, because the mean of its divisors is an integer number (11676665).

Almost surely, 2^126401166 is an apocalyptic number.

126401166 is an abundant number, since it is smaller than the sum of its proper divisors (153838794).

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

126401166 is a wasteful number, since it uses less digits than its factorization.

126401166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163360 (or 163357 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 126401166 is about 11242.8273134474. The cubic root of 126401166 is about 501.8612839796.

Adding to 126401166 its reverse (661104621), we get a palindrome (787505787).

The spelling of 126401166 in words is "one hundred twenty-six million, four hundred one thousand, one hundred sixty-six".