42194297 has 4 divisors (see below), whose sum is σ = 43092096. Its totient is φ = 41296500.

The previous prime is 42194293. The next prime is 42194311. The reversal of 42194297 is 79249124.

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 42194297 - 2² = 42194293 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 42194297.

It is not an unprimeable number, because it can be changed into a prime (42194291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448829 + ... + 448922.

It is an arithmetic number, because the mean of its divisors is an integer number (10773024).

Almost surely, 2^42194297 is an apocalyptic number.

42194297 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

42194297 is a deficient number, since it is larger than the sum of its proper divisors (897799).

42194297 is an equidigital number, since it uses as much as digits as its factorization.

42194297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897798.

The product of its digits is 36288, while the sum is 38.

The square root of 42194297 is about 6495.7137406139. The cubic root of 42194297 is about 348.1378571492.

The spelling of 42194297 in words is "forty-two million, one hundred ninety-four thousand, two hundred ninety-seven".