1204039 has 4 divisors (see below), whose sum is σ = 1219360. Its totient is φ = 1188720.

The previous prime is 1204037. The next prime is 1204097. The reversal of 1204039 is 9304021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9304021 = 353 ⋅26357.

It is a cyclic number.

It is not a de Polignac number, because 1204039 - 2¹ = 1204037 is a prime.

It is a Duffinian number.

1204039 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7542 + ... + 7699.

It is an arithmetic number, because the mean of its divisors is an integer number (304840).

2^1204039 is an apocalyptic number.

1204039 is a deficient number, since it is larger than the sum of its proper divisors (15321).

1204039 is an equidigital number, since it uses as much as digits as its factorization.

1204039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15320.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1204039 is about 1097.2871091925. The cubic root of 1204039 is about 106.3849477925.

The spelling of 1204039 in words is "one million, two hundred four thousand, thirty-nine".