1272834 has 36 divisors (see below), whose sum is σ = 2893254. Its totient is φ = 419904.

The previous prime is 1272833. The next prime is 1272847. The reversal of 1272834 is 4382721.

It can be written as a sum of positive squares in only one way, i.e., 1108809 + 164025 = 1053^2 + 405^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1272798 and 1272807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272833) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13074 + ... + 13170.

2^1272834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1446627).

1272834 is an abundant number, since it is smaller than the sum of its proper divisors (1620420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272834 is an frugal number, since it uses more digits than its factorization.

1272834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 102 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 1272834 is about 1128.1994504519. The cubic root of 1272834 is about 108.3737053999.

The spelling of 1272834 in words is "one million, two hundred seventy-two thousand, eight hundred thirty-four".