126700240 has 20 divisors (see below), whose sum is σ = 294578244. Its totient is φ = 50680064.

The previous prime is 126700237. The next prime is 126700241. The reversal of 126700240 is 42007621.

It can be written as a sum of positive squares in 2 ways, for example, as 45050944 + 81649296 = 6712^2 + 9036^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126700241) by changing a digit.

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, 791797 + ... + 791956.

Almost surely, 2^126700240 is an apocalyptic number.

126700240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126700240 is an abundant number, since it is smaller than the sum of its proper divisors (167878004).

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

126700240 is a wasteful number, since it uses less digits than its factorization.

126700240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583766 (or 1583760 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 126700240 is about 11256.1201130763. The cubic root of 126700240 is about 502.2567851826.

Adding to 126700240 its reverse (42007621), we get a palindrome (168707861).

The spelling of 126700240 in words is "one hundred twenty-six million, seven hundred thousand, two hundred forty".