1256106103 has 8 divisors (see below), whose sum is σ = 1435844480. Its totient is φ = 1076441400.

The previous prime is 1256106097. The next prime is 1256106127. The reversal of 1256106103 is 3016016521.

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

It is a cyclic number.

It is not a de Polignac number, because 1256106103 - 2²⁹ = 719235191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256106133) 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, 24928 + ... + 55978.

It is an arithmetic number, because the mean of its divisors is an integer number (179480560).

Almost surely, 2^1256106103 is an apocalyptic number.

1256106103 is a deficient number, since it is larger than the sum of its proper divisors (179738377).

1256106103 is an equidigital number, since it uses as much as digits as its factorization.

1256106103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36837.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1256106103 is about 35441.5871963997. The cubic root of 1256106103 is about 1078.9685233535.

The spelling of 1256106103 in words is "one billion, two hundred fifty-six million, one hundred six thousand, one hundred three".