42823620 has 96 divisors (see below), whose sum is σ = 152275200. Its totient is φ = 9787392.

The previous prime is 42823619. The next prime is 42823621. The reversal of 42823620 is 2632824.

42823620 is a `hidden beast` number, since 428 + 236 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (42823619) and next prime (42823621).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42823621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1885 + ... + 9444.

It is an arithmetic number, because the mean of its divisors is an integer number (1586200).

Almost surely, 2^42823620 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 42823620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76137600).

42823620 is an abundant number, since it is smaller than the sum of its proper divisors (109451580).

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

42823620 is a wasteful number, since it uses less digits than its factorization.

42823620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11354 (or 11346 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 42823620 is about 6543.9758557012. The cubic root of 42823620 is about 349.8601345913.

The spelling of 42823620 in words is "forty-two million, eight hundred twenty-three thousand, six hundred twenty".