126665240 has 32 divisors (see below), whose sum is σ = 306920880. Its totient is φ = 46768512.

The previous prime is 126665239. The next prime is 126665251. The reversal of 126665240 is 42566621.

It is a junction number, because it is equal to n+sod(n) for n = 126665197 and 126665206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121274 + ... + 122313.

Almost surely, 2^126665240 is an apocalyptic number.

126665240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126665240 is an abundant number, since it is smaller than the sum of its proper divisors (180255640).

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

126665240 is a wasteful number, since it uses less digits than its factorization.

126665240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243611 (or 243607 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 126665240 is about 11254.5652959144. The cubic root of 126665240 is about 502.2105326882.

The spelling of 126665240 in words is "one hundred twenty-six million, six hundred sixty-five thousand, two hundred forty".