1642106 has 4 divisors (see below), whose sum is σ = 2463162. Its totient is φ = 821052.

The previous prime is 1642093. The next prime is 1642117. The reversal of 1642106 is 6012461.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 67081 = 1255^2 + 259^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410525 + ... + 410528.

2^1642106 is an apocalyptic number.

1642106 is a deficient number, since it is larger than the sum of its proper divisors (821056).

1642106 is an equidigital number, since it uses as much as digits as its factorization.

1642106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821055.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1642106 is about 1281.4468385384. The cubic root of 1642106 is about 117.9778278747.

Adding to 1642106 its reverse (6012461), we get a palindrome (7654567).

The spelling of 1642106 in words is "one million, six hundred forty-two thousand, one hundred six".