42858942 has 16 divisors (see below), whose sum is σ = 97963392. Its totient is φ = 12245400.

The previous prime is 42858923. The next prime is 42858947. The reversal of 42858942 is 24985824.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1020451 = 42858942 / (4 + 2 + 8 + 5 + 8 + 9 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 42858894 and 42858903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42858947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510184 + ... + 510267.

It is an arithmetic number, because the mean of its divisors is an integer number (6122712).

Almost surely, 2^42858942 is an apocalyptic number.

42858942 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42858942 is an abundant number, since it is smaller than the sum of its proper divisors (55104450).

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

42858942 is a wasteful number, since it uses less digits than its factorization.

42858942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020463.

The product of its digits is 184320, while the sum is 42.

The square root of 42858942 is about 6546.6741174431. The cubic root of 42858942 is about 349.9562993057.

The spelling of 42858942 in words is "forty-two million, eight hundred fifty-eight thousand, nine hundred forty-two".