42124004 has 24 divisors (see below), whose sum is σ = 81238080. Its totient is φ = 18988704.

The previous prime is 42124003. The next prime is 42124057. The reversal of 42124004 is 40042124.

It is not an unprimeable number, because it can be changed into a prime (42124001) 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, 7184 + ... + 11655.

It is an arithmetic number, because the mean of its divisors is an integer number (3384920).

Almost surely, 2^42124004 is an apocalyptic number.

It is an amenable number.

42124004 is a deficient number, since it is larger than the sum of its proper divisors (39114076).

42124004 is a wasteful number, since it uses less digits than its factorization.

42124004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18899 (or 18897 counting only the distinct ones).

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

The square root of 42124004 is about 6490.3007634469. The cubic root of 42124004 is about 347.9444245597.

Adding to 42124004 its reverse (40042124), we get a palindrome (82166128).

The spelling of 42124004 in words is "forty-two million, one hundred twenty-four thousand, four".