42568546 has 4 divisors (see below), whose sum is σ = 63852822. Its totient is φ = 21284272.

The previous prime is 42568543. The next prime is 42568583. The reversal of 42568546 is 64586524.

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., 32890225 + 9678321 = 5735^2 + 3111^2 .

It is a super-2 number, since 2×42568546² = 3624162217108232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42568499 and 42568508.

It is not an unprimeable number, because it can be changed into a prime (42568543) 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 as a sum of consecutive naturals, namely, 10642135 + ... + 10642138.

Almost surely, 2^42568546 is an apocalyptic number.

42568546 is a deficient number, since it is larger than the sum of its proper divisors (21284276).

42568546 is a wasteful number, since it uses less digits than its factorization.

42568546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21284275.

The product of its digits is 230400, while the sum is 40.

The square root of 42568546 is about 6524.4575253426. The cubic root of 42568546 is about 349.1641168664.

The spelling of 42568546 in words is "forty-two million, five hundred sixty-eight thousand, five hundred forty-six".