1245204 has 18 divisors (see below), whose sum is σ = 3147690. Its totient is φ = 415056.

The previous prime is 1245191. The next prime is 1245217. The reversal of 1245204 is 4025421.

It is an interprime number because it is at equal distance from previous prime (1245191) and next prime (1245217).

It can be written as a sum of positive squares in only one way, i.e., 636804 + 608400 = 798^2 + 780^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 17259 + ... + 17330.

2^1245204 is an apocalyptic number.

It is an amenable number.

1245204 is an abundant number, since it is smaller than the sum of its proper divisors (1902486).

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

1245204 is a wasteful number, since it uses less digits than its factorization.

1245204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34599 (or 34594 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1245204 is about 1115.8870910625. The cubic root of 1245204 is about 107.5837890108.

The spelling of 1245204 in words is "one million, two hundred forty-five thousand, two hundred four".