1566442 has 8 divisors (see below), whose sum is σ = 2354976. Its totient is φ = 781452.

The previous prime is 1566427. The next prime is 1566449. The reversal of 1566442 is 2446651.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1566442.

It is not an unprimeable number, because it can be changed into a prime (1566449) 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, 1323 + ... + 2209.

It is an arithmetic number, because the mean of its divisors is an integer number (294372).

2^1566442 is an apocalyptic number.

1566442 is a deficient number, since it is larger than the sum of its proper divisors (788534).

1566442 is an equidigital number, since it uses as much as digits as its factorization.

1566442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1772.

The product of its digits is 5760, while the sum is 28.

The square root of 1566442 is about 1251.5758067333. The cubic root of 1566442 is about 116.1372236539.

The spelling of 1566442 in words is "one million, five hundred sixty-six thousand, four hundred forty-two".