1256101 has 12 divisors (see below), whose sum is σ = 1578976. Its totient is φ = 978120.

The previous prime is 1256063. The next prime is 1256107. The reversal of 1256101 is 1016521.

It is a happy number.

It is not a de Polignac number, because 1256101 - 2¹¹ = 1254053 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106 + ... + 1588.

2^1256101 is an apocalyptic number.

1256101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1256101 is a deficient number, since it is larger than the sum of its proper divisors (322875).

1256101 is a wasteful number, since it uses less digits than its factorization.

1256101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1256101 is about 1120.7591177412. The cubic root of 1256101 is about 107.8967062229.

It can be divided in two parts, 125 and 6101, that added together give a palindrome (6226).

The spelling of 1256101 in words is "one million, two hundred fifty-six thousand, one hundred one".