40421042 has 8 divisors (see below), whose sum is σ = 60663600. Its totient is φ = 20199844.

The previous prime is 40421027. The next prime is 40421047. The reversal of 40421042 is 24012404.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40421042.

It is not an unprimeable number, because it can be changed into a prime (40421047) 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, 809 + ... + 9027.

It is an arithmetic number, because the mean of its divisors is an integer number (7582950).

Almost surely, 2^40421042 is an apocalyptic number.

40421042 is a deficient number, since it is larger than the sum of its proper divisors (20242558).

40421042 is a wasteful number, since it uses less digits than its factorization.

40421042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10680.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40421042 is about 6357.7544778011. The cubic root of 40421042 is about 343.1909563511.

Adding to 40421042 its reverse (24012404), we get a palindrome (64433446).

The spelling of 40421042 in words is "forty million, four hundred twenty-one thousand, forty-two".