42666632 has 8 divisors (see below), whose sum is σ = 79999950. Its totient is φ = 21333312.

The previous prime is 42666629. The next prime is 42666641. The reversal of 42666632 is 23666624.

It can be written as a sum of positive squares in only one way, i.e., 41809156 + 857476 = 6466^2 + 926^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 42666592 and 42666601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2666657 + ... + 2666672.

Almost surely, 2^42666632 is an apocalyptic number.

It is an amenable number.

42666632 is a deficient number, since it is larger than the sum of its proper divisors (37333318).

42666632 is a wasteful number, since it uses less digits than its factorization.

42666632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5333335 (or 5333331 counting only the distinct ones).

The product of its digits is 62208, while the sum is 35.

The square root of 42666632 is about 6531.9699938074. The cubic root of 42666632 is about 349.4320912566.

The spelling of 42666632 in words is "forty-two million, six hundred sixty-six thousand, six hundred thirty-two".