42388882 has 4 divisors (see below), whose sum is σ = 63583326. Its totient is φ = 21194440.

The previous prime is 42388859. The next prime is 42388883. The reversal of 42388882 is 28888324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 26635921 + 15752961 = 5161^2 + 3969^2 .

It is not an unprimeable number, because it can be changed into a prime (42388883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10597219 + ... + 10597222.

Almost surely, 2^42388882 is an apocalyptic number.

42388882 is a deficient number, since it is larger than the sum of its proper divisors (21194444).

42388882 is a wasteful number, since it uses less digits than its factorization.

42388882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21194443.

The product of its digits is 196608, while the sum is 43.

The square root of 42388882 is about 6510.6744658292. The cubic root of 42388882 is about 348.6721990006.

The spelling of 42388882 in words is "forty-two million, three hundred eighty-eight thousand, eight hundred eighty-two".