1680142 has 8 divisors (see below), whose sum is σ = 2548800. Its totient is φ = 830544.

The previous prime is 1680131. The next prime is 1680149. The reversal of 1680142 is 2410861.

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

It is a super-3 number, since 3×1680142³ = 14228503332088269864, which contains 333 as substring.

It is a d-powerful number, because it can be written as 1 + 6⁸ + 8 + 0 + 1 + 4 + 2⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680149) 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, 4542 + ... + 4897.

It is an arithmetic number, because the mean of its divisors is an integer number (318600).

2^1680142 is an apocalyptic number.

1680142 is a deficient number, since it is larger than the sum of its proper divisors (868658).

1680142 is an equidigital number, since it uses as much as digits as its factorization.

1680142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9530.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1680142 is about 1296.2029162134. The cubic root of 1680142 is about 118.8817883137.

The spelling of 1680142 in words is "one million, six hundred eighty thousand, one hundred forty-two".