1842020 has 24 divisors (see below), whose sum is σ = 3994368. Its totient is φ = 712800.

The previous prime is 1842011. The next prime is 1842023. The reversal of 1842020 is 202481.

It is a self number, because there is not a number n which added to its sum of digits gives 1842020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1842023) 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, 866 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (166432).

2^1842020 is an apocalyptic number.

1842020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1842020 is an abundant number, since it is smaller than the sum of its proper divisors (2152348).

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

1842020 is a wasteful number, since it uses less digits than its factorization.

1842020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011 (or 3009 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1842020 is about 1357.2103742604. The cubic root of 1842020 is about 122.5833390973.

The spelling of 1842020 in words is "one million, eight hundred forty-two thousand, twenty".