42857424 has 120 divisors (see below), whose sum is σ = 126922432. Its totient is φ = 13996800.

The previous prime is 42857417. The next prime is 42857471. The reversal of 42857424 is 42475824.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 283749 + ... + 283899.

Almost surely, 2^42857424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42857424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63461216).

42857424 is an abundant number, since it is smaller than the sum of its proper divisors (84065008).

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

42857424 is a wasteful number, since it uses less digits than its factorization.

42857424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 229 counting only the distinct ones).

The product of its digits is 71680, while the sum is 36.

The square root of 42857424 is about 6546.5581796850. The cubic root of 42857424 is about 349.9521676130.

The spelling of 42857424 in words is "forty-two million, eight hundred fifty-seven thousand, four hundred twenty-four".