40421198 has 4 divisors (see below), whose sum is σ = 60631800. Its totient is φ = 20210598.

The previous prime is 40421197. The next prime is 40421221. The reversal of 40421198 is 89112404.

40421198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40421198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40421197) 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 as a sum of consecutive naturals, namely, 10105298 + ... + 10105301.

It is an arithmetic number, because the mean of its divisors is an integer number (15157950).

Almost surely, 2^40421198 is an apocalyptic number.

40421198 is a deficient number, since it is larger than the sum of its proper divisors (20210602).

40421198 is a wasteful number, since it uses less digits than its factorization.

40421198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20210601.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 40421198 is about 6357.7667462718. The cubic root of 40421198 is about 343.1913978515.

The spelling of 40421198 in words is "forty million, four hundred twenty-one thousand, one hundred ninety-eight".