42566434 has 4 divisors (see below), whose sum is σ = 63849654. Its totient is φ = 21283216.

The previous prime is 42566429. The next prime is 42566437. The reversal of 42566434 is 43466524.

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., 30835809 + 11730625 = 5553^2 + 3425^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42566434.

It is not an unprimeable number, because it can be changed into a prime (42566437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10641607 + ... + 10641610.

Almost surely, 2^42566434 is an apocalyptic number.

42566434 is a deficient number, since it is larger than the sum of its proper divisors (21283220).

42566434 is a wasteful number, since it uses less digits than its factorization.

42566434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21283219.

The product of its digits is 69120, while the sum is 34.

The square root of 42566434 is about 6524.2956707985. The cubic root of 42566434 is about 349.1583422833.

The spelling of 42566434 in words is "forty-two million, five hundred sixty-six thousand, four hundred thirty-four".