42168297 has 8 divisors (see below), whose sum is σ = 56285856. Its totient is φ = 28081472.

The previous prime is 42168293. The next prime is 42168307. The reversal of 42168297 is 79286124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42168297 - 2² = 42168293 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42168293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4263 + ... + 10124.

It is an arithmetic number, because the mean of its divisors is an integer number (7035732).

Almost surely, 2^42168297 is an apocalyptic number.

It is an amenable number.

42168297 is a deficient number, since it is larger than the sum of its proper divisors (14117559).

42168297 is a wasteful number, since it uses less digits than its factorization.

42168297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15367.

The product of its digits is 48384, while the sum is 39.

The square root of 42168297 is about 6493.7121124978. The cubic root of 42168297 is about 348.0663352868.

Adding to 42168297 its sum of digits (39), we get a triangular number (42168336 = T₉₁₈₃).

The spelling of 42168297 in words is "forty-two million, one hundred sixty-eight thousand, two hundred ninety-seven".