1205442 has 40 divisors (see below), whose sum is σ = 3089856. Its totient is φ = 344088.

The previous prime is 1205437. The next prime is 1205447. The reversal of 1205442 is 2445021.

1205442 is a `hidden beast` number, since 120 + 544 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (1205437) and next prime (1205447).

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

It is not an unprimeable number, because it can be changed into a prime (1205447) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 603 + ... + 1665.

2^1205442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1205442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544928).

1205442 is an abundant number, since it is smaller than the sum of its proper divisors (1884414).

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

1205442 is a wasteful number, since it uses less digits than its factorization.

1205442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1075 counting only the distinct ones).

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

The square root of 1205442 is about 1097.9262270298. The cubic root of 1205442 is about 106.4262532500.

The spelling of 1205442 in words is "one million, two hundred five thousand, four hundred forty-two".