126857240 has 16 divisors (see below), whose sum is σ = 285428880. Its totient is φ = 50742880.

The previous prime is 126857233. The next prime is 126857273. The reversal of 126857240 is 42758621.

It is a self number, because there is not a number n which added to its sum of digits gives 126857240.

It is a congruent number.

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, 1585676 + ... + 1585755.

It is an arithmetic number, because the mean of its divisors is an integer number (17839305).

Almost surely, 2^126857240 is an apocalyptic number.

126857240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126857240 is an abundant number, since it is smaller than the sum of its proper divisors (158571640).

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

126857240 is a wasteful number, since it uses less digits than its factorization.

126857240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171442 (or 3171438 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 126857240 is about 11263.0919378295. The cubic root of 126857240 is about 502.4641559212.

The spelling of 126857240 in words is "one hundred twenty-six million, eight hundred fifty-seven thousand, two hundred forty".