42188841 has 12 divisors (see below), whose sum is σ = 61062768. Its totient is φ = 28068984.

The previous prime is 42188821. The next prime is 42188879. The reversal of 42188841 is 14888124.

It is a happy number.

It is not a de Polignac number, because 42188841 - 2⁹ = 42188329 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42188796 and 42188805.

It is not an unprimeable number, because it can be changed into a prime (42188821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226 + ... + 9188.

It is an arithmetic number, because the mean of its divisors is an integer number (5088564).

Almost surely, 2^42188841 is an apocalyptic number.

It is an amenable number.

42188841 is a deficient number, since it is larger than the sum of its proper divisors (18873927).

42188841 is a wasteful number, since it uses less digits than its factorization.

42188841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9492 (or 9489 counting only the distinct ones).

The product of its digits is 16384, while the sum is 36.

The square root of 42188841 is about 6495.2937577911. The cubic root of 42188841 is about 348.1228509978.

The spelling of 42188841 in words is "forty-two million, one hundred eighty-eight thousand, eight hundred forty-one".