40422421 has 8 divisors (see below), whose sum is σ = 43636320. Its totient is φ = 37223472.

The previous prime is 40422409. The next prime is 40422457. The reversal of 40422421 is 12422404.

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

It is not a de Polignac number, because 40422421 - 2¹³ = 40414229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40422121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2250 + ... + 9268.

It is an arithmetic number, because the mean of its divisors is an integer number (5454540).

Almost surely, 2^40422421 is an apocalyptic number.

It is an amenable number.

40422421 is a deficient number, since it is larger than the sum of its proper divisors (3213899).

40422421 is a wasteful number, since it uses less digits than its factorization.

40422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7475.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 40422421 is about 6357.8629271163. The cubic root of 40422421 is about 343.1948590622.

Adding to 40422421 its reverse (12422404), we get a palindrome (52844825).

The spelling of 40422421 in words is "forty million, four hundred twenty-two thousand, four hundred twenty-one".