1642055 has 4 divisors (see below), whose sum is σ = 1970472. Its totient is φ = 1313640.

The previous prime is 1642051. The next prime is 1642057. The reversal of 1642055 is 5502461.

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

It is not a de Polignac number, because 1642055 - 2² = 1642051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1642055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642051) 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, 164201 + ... + 164210.

It is an arithmetic number, because the mean of its divisors is an integer number (492618).

2^1642055 is an apocalyptic number.

1642055 is a deficient number, since it is larger than the sum of its proper divisors (328417).

1642055 is an equidigital number, since it uses as much as digits as its factorization.

1642055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328416.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1642055 is about 1281.4269390020. The cubic root of 1642055 is about 117.9766064896.

The spelling of 1642055 in words is "one million, six hundred forty-two thousand, fifty-five".