42666038 has 4 divisors (see below), whose sum is σ = 63999060. Its totient is φ = 21333018.

The previous prime is 42665957. The next prime is 42666053. The reversal of 42666038 is 83066624.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 42665989 and 42666007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666508 + ... + 10666511.

It is an arithmetic number, because the mean of its divisors is an integer number (15999765).

Almost surely, 2^42666038 is an apocalyptic number.

42666038 is a deficient number, since it is larger than the sum of its proper divisors (21333022).

42666038 is a wasteful number, since it uses less digits than its factorization.

42666038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21333021.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 42666038 is about 6531.9245249773. The cubic root of 42666038 is about 349.4304696645.

The spelling of 42666038 in words is "forty-two million, six hundred sixty-six thousand, thirty-eight".