1247004 has 72 divisors (see below), whose sum is σ = 3564288. Its totient is φ = 364320.

The previous prime is 1246997. The next prime is 1247009. The reversal of 1247004 is 4007421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18579 + ... + 18645.

It is an arithmetic number, because the mean of its divisors is an integer number (49504).

2^1247004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1247004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782144).

1247004 is an abundant number, since it is smaller than the sum of its proper divisors (2317284).

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

1247004 is a wasteful number, since it uses less digits than its factorization.

1247004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 1247004 is about 1116.6933330149. The cubic root of 1247004 is about 107.6356031673.

The spelling of 1247004 in words is "one million, two hundred forty-seven thousand, four".