2056442 has 4 divisors (see below), whose sum is σ = 3084666. Its totient is φ = 1028220.

The previous prime is 2056441. The next prime is 2056459. The reversal of 2056442 is 2446502.

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

It can be written as a sum of positive squares in only one way, i.e., 1038361 + 1018081 = 1019^2 + 1009^2 .

It is not an unprimeable number, because it can be changed into a prime (2056441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514109 + ... + 514112.

2^2056442 is an apocalyptic number.

2056442 is a deficient number, since it is larger than the sum of its proper divisors (1028224).

2056442 is a wasteful number, since it uses less digits than its factorization.

2056442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028223.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2056442 is about 1434.0299857395. The cubic root of 2056442 is about 127.1663350515.

The spelling of 2056442 in words is "two million, fifty-six thousand, four hundred forty-two".