1799942 has 4 divisors (see below), whose sum is σ = 2699916. Its totient is φ = 899970.

The previous prime is 1799929. The next prime is 1799951. The reversal of 1799942 is 2499971.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2499971 = 67 ⋅37313.

It is a self number, because there is not a number n which added to its sum of digits gives 1799942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449984 + ... + 449987.

It is an arithmetic number, because the mean of its divisors is an integer number (674979).

2^1799942 is an apocalyptic number.

1799942 is a deficient number, since it is larger than the sum of its proper divisors (899974).

1799942 is an equidigital number, since it uses as much as digits as its factorization.

1799942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 899973.

The product of its digits is 40824, while the sum is 41.

The square root of 1799942 is about 1341.6191710020. The cubic root of 1799942 is about 121.6427333503.

The spelling of 1799942 in words is "one million, seven hundred ninety-nine thousand, nine hundred forty-two".