1249506 has 28 divisors (see below), whose sum is σ = 2813382. Its totient is φ = 416016.

The previous prime is 1249499. The next prime is 1249511. The reversal of 1249506 is 6059421.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 455625 = 891^2 + 675^2 .

It is a super-3 number, since 3×1249506³ = 5852430870043338648, which contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1249506.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1030 + ... + 1886.

2^1249506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1249506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1406691).

1249506 is an abundant number, since it is smaller than the sum of its proper divisors (1563876).

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

1249506 is an frugal number, since it uses more digits than its factorization.

1249506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1249506 is about 1117.8130434022. The cubic root of 1249506 is about 107.7075420887.

It can be divided in two parts, 124950 and 6, that multiplied together give a triangular number (749700 = T₁₂₂₄).

The spelling of 1249506 in words is "one million, two hundred forty-nine thousand, five hundred six".