1642086 has 32 divisors (see below), whose sum is σ = 3732480. Its totient is φ = 534888.

The previous prime is 1642079. The next prime is 1642093. The reversal of 1642086 is 6802461.

It is an interprime number because it is at equal distance from previous prime (1642079) and next prime (1642093).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2215 + ... + 2861.

It is an arithmetic number, because the mean of its divisors is an integer number (116640).

2^1642086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1866240).

1642086 is an abundant number, since it is smaller than the sum of its proper divisors (2090394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1642086 is a wasteful number, since it uses less digits than its factorization.

1642086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1642086 is about 1281.4390348354. The cubic root of 1642086 is about 117.9773489032.

It can be divided in two parts, 16 and 42086, that multiplied together give a palindrome (673376).

The spelling of 1642086 in words is "one million, six hundred forty-two thousand, eighty-six".