42537866 has 16 divisors (see below), whose sum is σ = 73847040. Its totient is φ = 17999280.

The previous prime is 42537857. The next prime is 42537881. The reversal of 42537866 is 66873524.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18125 + ... + 20336.

It is an arithmetic number, because the mean of its divisors is an integer number (4615440).

Almost surely, 2^42537866 is an apocalyptic number.

42537866 is a deficient number, since it is larger than the sum of its proper divisors (31309174).

42537866 is a wasteful number, since it uses less digits than its factorization.

42537866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38549.

The product of its digits is 241920, while the sum is 41.

The square root of 42537866 is about 6522.1059482348. The cubic root of 42537866 is about 349.0802135255.

The spelling of 42537866 in words is "forty-two million, five hundred thirty-seven thousand, eight hundred sixty-six".