5645042 has 8 divisors (see below), whose sum is σ = 9118956. Its totient is φ = 2605392.

The previous prime is 5645011. The next prime is 5645047. The reversal of 5645042 is 2405465.

It can be written as a sum of positive squares in 2 ways, for example, as 4800481 + 844561 = 2191^2 + 919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 217117 = 5645042 / (5 + 6 + 4 + 5 + 0 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (5645047) 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, 108533 + ... + 108584.

Almost surely, 2^5645042 is an apocalyptic number.

5645042 is a deficient number, since it is larger than the sum of its proper divisors (3473914).

5645042 is a wasteful number, since it uses less digits than its factorization.

5645042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217132.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 5645042 is about 2375.9297127651. The cubic root of 5645042 is about 178.0556363557.

The spelling of 5645042 in words is "five million, six hundred forty-five thousand, forty-two".