1261834 has 16 divisors (see below), whose sum is σ = 2179008. Its totient is φ = 536832.

The previous prime is 1261831. The next prime is 1261837. The reversal of 1261834 is 4381621.

It is an interprime number because it is at equal distance from previous prime (1261831) and next prime (1261837).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1261799 and 1261808.

It is not an unprimeable number, because it can be changed into a prime (1261831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2469 + ... + 2935.

It is an arithmetic number, because the mean of its divisors is an integer number (136188).

2^1261834 is an apocalyptic number.

1261834 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1261834 is a deficient number, since it is larger than the sum of its proper divisors (917174).

1261834 is a wasteful number, since it uses less digits than its factorization.

1261834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669.

The product of its digits is 1152, while the sum is 25.

The square root of 1261834 is about 1123.3138475066. The cubic root of 1261834 is about 108.0606084134.

The spelling of 1261834 in words is "one million, two hundred sixty-one thousand, eight hundred thirty-four".