42189413 has 4 divisors (see below), whose sum is σ = 48216480. Its totient is φ = 36162348.

The previous prime is 42189391. The next prime is 42189421. The reversal of 42189413 is 31498124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42189413 - 2⁶ = 42189349 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42189413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42189463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3013523 + ... + 3013536.

It is an arithmetic number, because the mean of its divisors is an integer number (12054120).

Almost surely, 2^42189413 is an apocalyptic number.

It is an amenable number.

42189413 is a deficient number, since it is larger than the sum of its proper divisors (6027067).

42189413 is an equidigital number, since it uses as much as digits as its factorization.

42189413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027066.

The product of its digits is 6912, while the sum is 32.

The square root of 42189413 is about 6495.3377895226. The cubic root of 42189413 is about 348.1244242841.

It can be divided in two parts, 4218 and 9413, that added together give a palindrome (13631).

The spelling of 42189413 in words is "forty-two million, one hundred eighty-nine thousand, four hundred thirteen".