1256860041 has 8 divisors (see below), whose sum is σ = 1711469184. Its totient is φ = 820078800.

The previous prime is 1256860039. The next prime is 1256860049. The reversal of 1256860041 is 1400686521.

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

It is not a de Polignac number, because 1256860041 - 2¹ = 1256860039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1256859984 and 1256860011.

It is not an unprimeable number, because it can be changed into a prime (1256860049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4456810 + ... + 4457091.

It is an arithmetic number, because the mean of its divisors is an integer number (213933648).

Almost surely, 2^1256860041 is an apocalyptic number.

It is an amenable number.

1256860041 is a deficient number, since it is larger than the sum of its proper divisors (454609143).

1256860041 is an equidigital number, since it uses as much as digits as its factorization.

1256860041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8913951.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1256860041 is about 35452.2219472913. The cubic root of 1256860041 is about 1079.1843524327.

The spelling of 1256860041 in words is "one billion, two hundred fifty-six million, eight hundred sixty thousand, forty-one".