42858140 has 24 divisors (see below), whose sum is σ = 96925920. Its totient is φ = 15824448.

The previous prime is 42858133. The next prime is 42858157. The reversal of 42858140 is 4185824.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42858097 and 42858106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82160 + ... + 82679.

It is an arithmetic number, because the mean of its divisors is an integer number (4038580).

Almost surely, 2^42858140 is an apocalyptic number.

It is an amenable number.

42858140 is an abundant number, since it is smaller than the sum of its proper divisors (54067780).

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

42858140 is a wasteful number, since it uses less digits than its factorization.

42858140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164861 (or 164859 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 42858140 is about 6546.6128646805. The cubic root of 42858140 is about 349.9541164341.

The spelling of 42858140 in words is "forty-two million, eight hundred fifty-eight thousand, one hundred forty".