42166396 has 12 divisors (see below), whose sum is σ = 77675080. Its totient is φ = 19973520.

The previous prime is 42166393. The next prime is 42166427. The reversal of 42166396 is 69366124.

It is a happy number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42166391) 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, 277335 + ... + 277486.

Almost surely, 2^42166396 is an apocalyptic number.

It is an amenable number.

42166396 is a deficient number, since it is larger than the sum of its proper divisors (35508684).

42166396 is a wasteful number, since it uses less digits than its factorization.

42166396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554844 (or 554842 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 42166396 is about 6493.5657384830. The cubic root of 42166396 is about 348.0611047851.

The spelling of 42166396 in words is "forty-two million, one hundred sixty-six thousand, three hundred ninety-six".