42382428 has 108 divisors (see below), whose sum is σ = 116613336. Its totient is φ = 11968000.

The previous prime is 42382421. The next prime is 42382441. The reversal of 42382428 is 82428324.

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 (42382421) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 419578 + ... + 419678.

Almost surely, 2^42382428 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 42382428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58306668).

42382428 is an abundant number, since it is smaller than the sum of its proper divisors (74230908).

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

42382428 is a wasteful number, since it uses less digits than its factorization.

42382428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 134 counting only the distinct ones).

The product of its digits is 24576, while the sum is 33.

The square root of 42382428 is about 6510.1787993879. The cubic root of 42382428 is about 348.6545021857.

It can be divided in two parts, 4238 and 2428, that added together give a palindrome (6666).

The spelling of 42382428 in words is "forty-two million, three hundred eighty-two thousand, four hundred twenty-eight".