126520168 has 16 divisors (see below), whose sum is σ = 243637380. Its totient is φ = 61550208.

The previous prime is 126520129. The next prime is 126520189. The reversal of 126520168 is 861025621.

It can be written as a sum of positive squares in 2 ways, for example, as 89529444 + 36990724 = 9462^2 + 6082^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 213421 + ... + 214012.

Almost surely, 2^126520168 is an apocalyptic number.

It is an amenable number.

126520168 is a deficient number, since it is larger than the sum of its proper divisors (117117212).

126520168 is a wasteful number, since it uses less digits than its factorization.

126520168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427476 (or 427472 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 126520168 is about 11248.1184204293. The cubic root of 126520168 is about 502.0187291627.

Adding to 126520168 its reverse (861025621), we get a palindrome (987545789).

The spelling of 126520168 in words is "one hundred twenty-six million, five hundred twenty thousand, one hundred sixty-eight".