1642117 has 2 divisors, whose sum is σ = 1642118. Its totient is φ = 1642116.

The previous prime is 1642093. The next prime is 1642141. The reversal of 1642117 is 7112461.

It is a balanced prime because it is at equal distance from previous prime (1642093) and next prime (1642141).

It can be written as a sum of positive squares in only one way, i.e., 1640961 + 1156 = 1281^2 + 34^2 .

It is an emirp because it is prime and its reverse (7112461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1642117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1642187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821058 + 821059.

It is an arithmetic number, because the mean of its divisors is an integer number (821059).

2^1642117 is an apocalyptic number.

It is an amenable number.

1642117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642117 is an equidigital number, since it uses as much as digits as its factorization.

1642117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336, while the sum is 22.

The square root of 1642117 is about 1281.4511305547. The cubic root of 1642117 is about 117.9780913074.

Adding to 1642117 its reverse (7112461), we get a palindrome (8754578).

The spelling of 1642117 in words is "one million, six hundred forty-two thousand, one hundred seventeen".