42349994 has 8 divisors (see below), whose sum is σ = 63563940. Its totient is φ = 21162016.

The previous prime is 42349991. The next prime is 42349997. The reversal of 42349994 is 49994324.

It is an interprime number because it is at equal distance from previous prime (42349991) and next prime (42349997).

It can be written as a sum of positive squares in 2 ways, for example, as 42315025 + 34969 = 6505^2 + 187^2 .

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

It is not an unprimeable number, because it can be changed into a prime (42349991) 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, 1709 + ... + 9360.

Almost surely, 2^42349994 is an apocalyptic number.

42349994 is a deficient number, since it is larger than the sum of its proper divisors (21213946).

42349994 is a wasteful number, since it uses less digits than its factorization.

42349994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12984.

The product of its digits is 279936, while the sum is 44.

The square root of 42349994 is about 6507.6873004163. The cubic root of 42349994 is about 348.5655412137.

The spelling of 42349994 in words is "forty-two million, three hundred forty-nine thousand, nine hundred ninety-four".