42665836 has 6 divisors (see below), whose sum is σ = 74665220. Its totient is φ = 21332916.

The previous prime is 42665807. The next prime is 42665867. The reversal of 42665836 is 63856624.

It is a happy number.

It is a super-3 number, since 3×42665836³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5333226 + ... + 5333233.

Almost surely, 2^42665836 is an apocalyptic number.

It is an amenable number.

42665836 is a deficient number, since it is larger than the sum of its proper divisors (31999384).

42665836 is a wasteful number, since it uses less digits than its factorization.

42665836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10666463 (or 10666461 counting only the distinct ones).

The product of its digits is 207360, while the sum is 40.

The square root of 42665836 is about 6531.9090624411. The cubic root of 42665836 is about 349.4299182105.

The spelling of 42665836 in words is "forty-two million, six hundred sixty-five thousand, eight hundred thirty-six".