1000256241 has 4 divisors (see below), whose sum is σ = 1333674992. Its totient is φ = 666837492.

The previous prime is 1000256207. The next prime is 1000256287. The reversal of 1000256241 is 1426520001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1000256241 - 2¹¹ = 1000254193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1000256641) 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 3 ways as a sum of consecutive naturals, for example, 166709371 + ... + 166709376.

It is an arithmetic number, because the mean of its divisors is an integer number (333418748).

Almost surely, 2^1000256241 is an apocalyptic number.

It is an amenable number.

1000256241 is a deficient number, since it is larger than the sum of its proper divisors (333418751).

1000256241 is an equidigital number, since it uses as much as digits as its factorization.

1000256241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333418750.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1000256241 is about 31626.8278681249. The cubic root of 1000256241 is about 1000.0854063722.

Adding to 1000256241 its reverse (1426520001), we get a palindrome (2426776242).

The spelling of 1000256241 in words is "one billion, two hundred fifty-six thousand, two hundred forty-one".