1681442 has 8 divisors (see below), whose sum is σ = 2882496. Its totient is φ = 720612.

The previous prime is 1681423. The next prime is 1681469. The reversal of 1681442 is 2441861.

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

It is a d-powerful number, because it can be written as 1 + 6⁸ + 8³ + 1 + 4⁴ + 4⁵ + 2⁵ .

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, 60038 + ... + 60065.

It is an arithmetic number, because the mean of its divisors is an integer number (360312).

2^1681442 is an apocalyptic number.

1681442 is a deficient number, since it is larger than the sum of its proper divisors (1201054).

1681442 is a wasteful number, since it uses less digits than its factorization.

1681442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120112.

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

The square root of 1681442 is about 1296.7042839445. The cubic root of 1681442 is about 118.9124417708.

The spelling of 1681442 in words is "one million, six hundred eighty-one thousand, four hundred forty-two".