42168726 has 24 divisors (see below), whose sum is σ = 94517280. Its totient is φ = 13571376.

The previous prime is 42168719. The next prime is 42168803. The reversal of 42168726 is 62786124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39870 + ... + 40913.

It is an arithmetic number, because the mean of its divisors is an integer number (3938220).

Almost surely, 2^42168726 is an apocalyptic number.

42168726 is an abundant number, since it is smaller than the sum of its proper divisors (52348554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42168726 is a wasteful number, since it uses less digits than its factorization.

42168726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80820 (or 80817 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 42168726 is about 6493.7451443678. The cubic root of 42168726 is about 348.0675156360.

The spelling of 42168726 in words is "forty-two million, one hundred sixty-eight thousand, seven hundred twenty-six".