1815042 has 8 divisors (see below), whose sum is σ = 3630096. Its totient is φ = 605012.

The previous prime is 1815007. The next prime is 1815043. The reversal of 1815042 is 2405181.

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

1815042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1815043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151248 + ... + 151259.

It is an arithmetic number, because the mean of its divisors is an integer number (453762).

2^1815042 is an apocalyptic number.

1815042 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1815042 is a wasteful number, since it uses less digits than its factorization.

1815042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302512.

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

The square root of 1815042 is about 1347.2349461026. The cubic root of 1815042 is about 121.9819466254.

The spelling of 1815042 in words is "one million, eight hundred fifteen thousand, forty-two".