3566494042 has 4 divisors (see below), whose sum is σ = 5349741066. Its totient is φ = 1783247020.

The previous prime is 3566494033. The next prime is 3566494049. The reversal of 3566494042 is 2404946653.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2404946653 = 101 ⋅23811353.

It can be written as a sum of positive squares in only one way, i.e., 3497421321 + 69072721 = 59139^2 + 8311^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3566494042.

It is not an unprimeable number, because it can be changed into a prime (3566494049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 891623509 + ... + 891623512.

Almost surely, 2^3566494042 is an apocalyptic number.

3566494042 is a deficient number, since it is larger than the sum of its proper divisors (1783247024).

3566494042 is a wasteful number, since it uses less digits than its factorization.

3566494042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783247023.

The product of its (nonzero) digits is 622080, while the sum is 43.

The square root of 3566494042 is about 59720.1309610084. The cubic root of 3566494042 is about 1527.8492345628.

The spelling of 3566494042 in words is "three billion, five hundred sixty-six million, four hundred ninety-four thousand, forty-two".