1660442 has 8 divisors (see below), whose sum is σ = 2846496. Its totient is φ = 711612.

The previous prime is 1660433. The next prime is 1660457. The reversal of 1660442 is 2440661.

It is a happy number.

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

It is a zygodrome in base 6.

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, 59288 + ... + 59315.

It is an arithmetic number, because the mean of its divisors is an integer number (355812).

2^1660442 is an apocalyptic number.

1660442 is a deficient number, since it is larger than the sum of its proper divisors (1186054).

1660442 is a wasteful number, since it uses less digits than its factorization.

1660442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118612.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1660442 is about 1288.5813905222. The cubic root of 1660442 is about 118.4153228434.

The spelling of 1660442 in words is "one million, six hundred sixty thousand, four hundred forty-two".