42421004 has 6 divisors (see below), whose sum is σ = 74236764. Its totient is φ = 21210500.

The previous prime is 42421003. The next prime is 42421013. The reversal of 42421004 is 40012424.

It is not an unprimeable number, because it can be changed into a prime (42421003) 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 as a sum of consecutive naturals, namely, 5302622 + ... + 5302629.

It is an arithmetic number, because the mean of its divisors is an integer number (12372794).

Almost surely, 2^42421004 is an apocalyptic number.

It is an amenable number.

42421004 is a deficient number, since it is larger than the sum of its proper divisors (31815760).

42421004 is a wasteful number, since it uses less digits than its factorization.

42421004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10605255 (or 10605253 counting only the distinct ones).

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

The square root of 42421004 is about 6513.1408705785. The cubic root of 42421004 is about 348.7602505519.

Adding to 42421004 its reverse (40012424), we get a palindrome (82433428).

The spelling of 42421004 in words is "forty-two million, four hundred twenty-one thousand, four".