1800442 has 8 divisors (see below), whose sum is σ = 3086496. Its totient is φ = 771612.

The previous prime is 1800431. The next prime is 1800451. The reversal of 1800442 is 2440081.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64288 + ... + 64315.

It is an arithmetic number, because the mean of its divisors is an integer number (385812).

2^1800442 is an apocalyptic number.

1800442 is a deficient number, since it is larger than the sum of its proper divisors (1286054).

1800442 is a wasteful number, since it uses less digits than its factorization.

1800442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128612.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1800442 is about 1341.8055000633. The cubic root of 1800442 is about 121.6539958865.

The spelling of 1800442 in words is "one million, eight hundred thousand, four hundred forty-two".