1684142 has 4 divisors (see below), whose sum is σ = 2526216. Its totient is φ = 842070.

The previous prime is 1684127. The next prime is 1684169. The reversal of 1684142 is 2414861.

It is a semiprime because it is the product of two primes.

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, 421034 + ... + 421037.

It is an arithmetic number, because the mean of its divisors is an integer number (631554).

2^1684142 is an apocalyptic number.

1684142 is a deficient number, since it is larger than the sum of its proper divisors (842074).

1684142 is an equidigital number, since it uses as much as digits as its factorization.

1684142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842073.

The product of its digits is 1536, while the sum is 26.

The square root of 1684142 is about 1297.7449672413. The cubic root of 1684142 is about 118.9760561953.

The spelling of 1684142 in words is "one million, six hundred eighty-four thousand, one hundred forty-two".