42004070 has 16 divisors (see below), whose sum is σ = 78046848. Its totient is φ = 16259520.

The previous prime is 42004069. The next prime is 42004073. The reversal of 42004070 is 7040024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42004073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67439 + ... + 68058.

It is an arithmetic number, because the mean of its divisors is an integer number (4877928).

Almost surely, 2^42004070 is an apocalyptic number.

42004070 is a deficient number, since it is larger than the sum of its proper divisors (36042778).

42004070 is a wasteful number, since it uses less digits than its factorization.

42004070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135535.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 42004070 is about 6481.0546981182. The cubic root of 42004070 is about 347.6138922438.

Adding to 42004070 its reverse (7040024), we get a palindrome (49044094).

The spelling of 42004070 in words is "forty-two million, four thousand, seventy".