42861228 has 24 divisors (see below), whose sum is σ = 100123632. Its totient is φ = 14270784.

The previous prime is 42861197. The next prime is 42861229. The reversal of 42861228 is 82216824.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (42861229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13926 + ... + 16722.

It is an arithmetic number, because the mean of its divisors is an integer number (4171818).

Almost surely, 2^42861228 is an apocalyptic number.

It is an amenable number.

42861228 is an abundant number, since it is smaller than the sum of its proper divisors (57262404).

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

42861228 is a wasteful number, since it uses less digits than its factorization.

42861228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081 (or 4079 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 42861228 is about 6546.8487075844. The cubic root of 42861228 is about 349.9625211569.

The spelling of 42861228 in words is "forty-two million, eight hundred sixty-one thousand, two hundred twenty-eight".