1843542 has 48 divisors (see below), whose sum is σ = 4294368. Its totient is φ = 570240.

The previous prime is 1843537. The next prime is 1843547. The reversal of 1843542 is 2453481.

It is an interprime number because it is at equal distance from previous prime (1843537) and next prime (1843547).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1843547) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25218 + ... + 25290.

It is an arithmetic number, because the mean of its divisors is an integer number (89466).

2^1843542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1843542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2147184).

1843542 is an abundant number, since it is smaller than the sum of its proper divisors (2450826).

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

1843542 is a wasteful number, since it uses less digits than its factorization.

1843542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 162 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1843542 is about 1357.7709674315. The cubic root of 1843542 is about 122.6170919844.

The spelling of 1843542 in words is "one million, eight hundred forty-three thousand, five hundred forty-two".