42666037 has 4 divisors (see below), whose sum is σ = 42696000. Its totient is φ = 42636076.

The previous prime is 42665957. The next prime is 42666053. The reversal of 42666037 is 73066624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42666037 is a prime.

It is a deceptive number, since it divides R_42666036.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42665993 and 42666011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42666097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12733 + ... + 15730.

It is an arithmetic number, because the mean of its divisors is an integer number (10674000).

Almost surely, 2^42666037 is an apocalyptic number.

It is an amenable number.

42666037 is a deficient number, since it is larger than the sum of its proper divisors (29963).

42666037 is a wasteful number, since it uses less digits than its factorization.

42666037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29962.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 42666037 is about 6531.9244484302. The cubic root of 42666037 is about 349.4304669345.

The spelling of 42666037 in words is "forty-two million, six hundred sixty-six thousand, thirty-seven".