126999168 has 64 divisors (see below), whose sum is σ = 339578400. Its totient is φ = 42052608.

The previous prime is 126999151. The next prime is 126999179. The reversal of 126999168 is 861999621.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×126999168² = 32257577345384448, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 126999168.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61578 + ... + 63606.

Almost surely, 2^126999168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126999168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169789200).

126999168 is an abundant number, since it is smaller than the sum of its proper divisors (212579232).

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

126999168 is a wasteful number, since it uses less digits than its factorization.

126999168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209 (or 2197 counting only the distinct ones).

The product of its digits is 419904, while the sum is 51.

The square root of 126999168 is about 11269.3907554934. The cubic root of 126999168 is about 502.6514718729.

The spelling of 126999168 in words is "one hundred twenty-six million, nine hundred ninety-nine thousand, one hundred sixty-eight".