1256040262 has 8 divisors (see below), whose sum is σ = 1915993800. Its totient is φ = 617375664.

The previous prime is 1256040229. The next prime is 1256040301. The reversal of 1256040262 is 2620406521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1256040262.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5322087 + ... + 5322322.

It is an arithmetic number, because the mean of its divisors is an integer number (239499225).

Almost surely, 2^1256040262 is an apocalyptic number.

1256040262 is a deficient number, since it is larger than the sum of its proper divisors (659953538).

1256040262 is a wasteful number, since it uses less digits than its factorization.

1256040262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10644470.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1256040262 is about 35440.6583178135. The cubic root of 1256040262 is about 1078.9496710162.

Adding to 1256040262 its reverse (2620406521), we get a palindrome (3876446783).

The spelling of 1256040262 in words is "one billion, two hundred fifty-six million, forty thousand, two hundred sixty-two".