42406998 has 8 divisors (see below), whose sum is σ = 84814008. Its totient is φ = 14135664.

The previous prime is 42406967. The next prime is 42407003. The reversal of 42406998 is 89960424.

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

42406998 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 3533911 + ... + 3533922.

It is an arithmetic number, because the mean of its divisors is an integer number (10601751).

Almost surely, 2^42406998 is an apocalyptic number.

42406998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42406998 is a wasteful number, since it uses less digits than its factorization.

42406998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7067838.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 42406998 is about 6512.0655709229. The cubic root of 42406998 is about 348.7218633279.

The spelling of 42406998 in words is "forty-two million, four hundred six thousand, nine hundred ninety-eight".