42084194 has 4 divisors (see below), whose sum is σ = 63126294. Its totient is φ = 21042096.

The previous prime is 42084193. The next prime is 42084233. The reversal of 42084194 is 49148024.

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., 42081169 + 3025 = 6487^2 + 55^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42084194.

It is not an unprimeable number, because it can be changed into a prime (42084193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10521047 + ... + 10521050.

Almost surely, 2^42084194 is an apocalyptic number.

42084194 is a deficient number, since it is larger than the sum of its proper divisors (21042100).

42084194 is a wasteful number, since it uses less digits than its factorization.

42084194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21042099.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 42084194 is about 6487.2331544349. The cubic root of 42084194 is about 347.8347797642.

The spelling of 42084194 in words is "forty-two million, eighty-four thousand, one hundred ninety-four".