42940004 has 6 divisors (see below), whose sum is σ = 75145014. Its totient is φ = 21470000.

The previous prime is 42940003. The next prime is 42940043. The reversal of 42940004 is 40004924.

It is a happy number.

42940004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 40347904 + 2592100 = 6352^2 + 1610^2 .

It is not an unprimeable number, because it can be changed into a prime (42940003) 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, 5367497 + ... + 5367504.

It is an arithmetic number, because the mean of its divisors is an integer number (12524169).

Almost surely, 2^42940004 is an apocalyptic number.

It is an amenable number.

42940004 is a deficient number, since it is larger than the sum of its proper divisors (32205010).

42940004 is a wasteful number, since it uses less digits than its factorization.

42940004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10735005 (or 10735003 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 42940004 is about 6552.8622753725. The cubic root of 42940004 is about 350.1767923161.

Adding to 42940004 its reverse (40004924), we get a palindrome (82944928).

The spelling of 42940004 in words is "forty-two million, nine hundred forty thousand, four".