1681342 has 8 divisors (see below), whose sum is σ = 2716056. Its totient is φ = 775992.

The previous prime is 1681321. The next prime is 1681349. The reversal of 1681342 is 2431861.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1681349) 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, 32308 + ... + 32359.

It is an arithmetic number, because the mean of its divisors is an integer number (339507).

2^1681342 is an apocalyptic number.

1681342 is a deficient number, since it is larger than the sum of its proper divisors (1034714).

1681342 is a wasteful number, since it uses less digits than its factorization.

1681342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64682.

The product of its digits is 1152, while the sum is 25.

The square root of 1681342 is about 1296.6657240785. The cubic root of 1681342 is about 118.9100843737.

It can be divided in two parts, 168 and 1342, that multiplied together give a triangular number (225456 = T₆₇₁).

The spelling of 1681342 in words is "one million, six hundred eighty-one thousand, three hundred forty-two".