42168357 has 40 divisors (see below), whose sum is σ = 78547392. Its totient is φ = 21902400.

The previous prime is 42168331. The next prime is 42168367. The reversal of 42168357 is 75386124.

It is not a de Polignac number, because 42168357 - 2⁶ = 42168293 is a prime.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42168307) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2857 + ... + 9617.

Almost surely, 2^42168357 is an apocalyptic number.

It is an amenable number.

42168357 is a deficient number, since it is larger than the sum of its proper divisors (36379035).

42168357 is a wasteful number, since it uses less digits than its factorization.

42168357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6791 (or 6782 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 42168357 is about 6493.7167323498. The cubic root of 42168357 is about 348.0665003711.

The spelling of 42168357 in words is "forty-two million, one hundred sixty-eight thousand, three hundred fifty-seven".