42197619 has 8 divisors (see below), whose sum is σ = 56843920. Its totient is φ = 27841536.

The previous prime is 42197599. The next prime is 42197633. The reversal of 42197619 is 91679124.

42197619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-42197619 is a prime.

It is a super-2 number, since 2×42197619² = 3561278098538322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42197719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72214 + ... + 72795.

It is an arithmetic number, because the mean of its divisors is an integer number (7105490).

Almost surely, 2^42197619 is an apocalyptic number.

42197619 is a deficient number, since it is larger than the sum of its proper divisors (14646301).

42197619 is a wasteful number, since it uses less digits than its factorization.

42197619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145109.

The product of its digits is 27216, while the sum is 39.

The square root of 42197619 is about 6495.9694426621. The cubic root of 42197619 is about 348.1469933255.

The spelling of 42197619 in words is "forty-two million, one hundred ninety-seven thousand, six hundred nineteen".