1642006 has 4 divisors (see below), whose sum is σ = 2463012. Its totient is φ = 821002.

The previous prime is 1641971. The next prime is 1642021. The reversal of 1642006 is 6002461.

1642006 is nontrivially palindromic in base 8.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410500 + ... + 410503.

It is an arithmetic number, because the mean of its divisors is an integer number (615753).

2^1642006 is an apocalyptic number.

1642006 is a deficient number, since it is larger than the sum of its proper divisors (821006).

1642006 is an equidigital number, since it uses as much as digits as its factorization.

1642006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821005.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1642006 is about 1281.4078195485. The cubic root of 1642006 is about 117.9754329781.

Adding to 1642006 its reverse (6002461), we get a palindrome (7644467).

The spelling of 1642006 in words is "one million, six hundred forty-two thousand, six".