1240251126 has 16 divisors (see below), whose sum is σ = 2588350464. Its totient is φ = 395442344.

The previous prime is 1240251121. The next prime is 1240251161. The reversal of 1240251126 is 6211520421.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1240251096 and 1240251105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240251121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4493526 + ... + 4493801.

It is an arithmetic number, because the mean of its divisors is an integer number (161771904).

Almost surely, 2^1240251126 is an apocalyptic number.

1240251126 is an abundant number, since it is smaller than the sum of its proper divisors (1348099338).

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

1240251126 is a wasteful number, since it uses less digits than its factorization.

1240251126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8987355.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1240251126 is about 35217.1992923912. The cubic root of 1240251126 is about 1074.4095913547.

Adding to 1240251126 its reverse (6211520421), we get a palindrome (7451771547).

The spelling of 1240251126 in words is "one billion, two hundred forty million, two hundred fifty-one thousand, one hundred twenty-six".