1261117 has 8 divisors (see below), whose sum is σ = 1481760. Its totient is φ = 1058160.

The previous prime is 1261109. The next prime is 1261121. The reversal of 1261117 is 7111621.

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 1261117 - 2³ = 1261109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1261094 and 1261103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4267 + ... + 4552.

It is an arithmetic number, because the mean of its divisors is an integer number (185220).

2^1261117 is an apocalyptic number.

It is an amenable number.

1261117 is a deficient number, since it is larger than the sum of its proper divisors (220643).

1261117 is a wasteful number, since it uses less digits than its factorization.

1261117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8843.

The product of its digits is 84, while the sum is 19.

The square root of 1261117 is about 1122.9946571556. The cubic root of 1261117 is about 108.0401371163.

Adding to 1261117 its reverse (7111621), we get a palindrome (8372738).

It can be divided in two parts, 1261 and 117, that added together give a triangular number (1378 = T₅₂).

The spelling of 1261117 in words is "one million, two hundred sixty-one thousand, one hundred seventeen".