1204149 has 8 divisors (see below), whose sum is σ = 1614400. Its totient is φ = 798336.

The previous prime is 1204141. The next prime is 1204153. The reversal of 1204149 is 9414021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1204149 - 2³ = 1204141 is a prime.

It is a Duffinian number.

1204149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412 + ... + 1605.

It is an arithmetic number, because the mean of its divisors is an integer number (201800).

2^1204149 is an apocalyptic number.

It is an amenable number.

1204149 is a deficient number, since it is larger than the sum of its proper divisors (410251).

1204149 is a wasteful number, since it uses less digits than its factorization.

1204149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1204149 is about 1097.3372316658. The cubic root of 1204149 is about 106.3881874406.

It can be divided in two parts, 12041 and 49, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 1204149 in words is "one million, two hundred four thousand, one hundred forty-nine".