2042641 has 4 divisors (see below), whose sum is σ = 2056500. Its totient is φ = 2028784.

The previous prime is 2042627. The next prime is 2042647. The reversal of 2042641 is 1462402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1462402 = 2 ⋅731201.

It can be written as a sum of positive squares in 2 ways, for example, as 992016 + 1050625 = 996^2 + 1025^2 .

It is not a de Polignac number, because 2042641 - 2⁵ = 2042609 is a prime.

It is an Ulam number.

It is a Duffinian number.

2042641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2042647) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 6706 + ... + 7003.

It is an arithmetic number, because the mean of its divisors is an integer number (514125).

2^2042641 is an apocalyptic number.

It is an amenable number.

2042641 is a deficient number, since it is larger than the sum of its proper divisors (13859).

2042641 is a wasteful number, since it uses less digits than its factorization.

2042641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13858.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2042641 is about 1429.2099216000. The cubic root of 2042641 is about 126.8812207066.

The spelling of 2042641 in words is "two million, forty-two thousand, six hundred forty-one".