1204158 has 16 divisors (see below), whose sum is σ = 2434320. Its totient is φ = 397056.

The previous prime is 1204153. The next prime is 1204169. The reversal of 1204158 is 8514021.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1204153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453 + ... + 1616.

It is an arithmetic number, because the mean of its divisors is an integer number (152145).

2^1204158 is an apocalyptic number.

1204158 is an abundant number, since it is smaller than the sum of its proper divisors (1230162).

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

1204158 is a wasteful number, since it uses less digits than its factorization.

1204158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1204158 is about 1097.3413324941. The cubic root of 1204158 is about 106.3884524940.

Adding to 1204158 its reverse (8514021), we get a palindrome (9718179).

It can be divided in two parts, 120 and 4158, that added together give a triangular number (4278 = T₉₂).

The spelling of 1204158 in words is "one million, two hundred four thousand, one hundred fifty-eight".