42145004 has 24 divisors (see below), whose sum is σ = 83235600. Its totient is φ = 18495680.

The previous prime is 42145003. The next prime is 42145009. The reversal of 42145004 is 40054124.

It is not an unprimeable number, because it can be changed into a prime (42145001) 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 in 7 ways as a sum of consecutive naturals, for example, 15239 + ... + 17790.

It is an arithmetic number, because the mean of its divisors is an integer number (3468150).

Almost surely, 2^42145004 is an apocalyptic number.

42145004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

42145004 is a deficient number, since it is larger than the sum of its proper divisors (41090596).

42145004 is a wasteful number, since it uses less digits than its factorization.

42145004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33073 (or 33071 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 42145004 is about 6491.9183605464. The cubic root of 42145004 is about 348.0022349793.

Adding to 42145004 its reverse (40054124), we get a palindrome (82199128).

The spelling of 42145004 in words is "forty-two million, one hundred forty-five thousand, four".