42858420 has 48 divisors (see below), whose sum is σ = 130915008. Its totient is φ = 10389760.

The previous prime is 42858419. The next prime is 42858421. The reversal of 42858420 is 2485824.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42858419) and next prime (42858421).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42858421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31809 + ... + 33128.

It is an arithmetic number, because the mean of its divisors is an integer number (2727396).

Almost surely, 2^42858420 is an apocalyptic number.

It is an amenable number.

42858420 is an abundant number, since it is smaller than the sum of its proper divisors (88056588).

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

42858420 is a wasteful number, since it uses less digits than its factorization.

42858420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64960 (or 64958 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 33.

The square root of 42858420 is about 6546.6342497500. The cubic root of 42858420 is about 349.9548785370.

The spelling of 42858420 in words is "forty-two million, eight hundred fifty-eight thousand, four hundred twenty".