42012004 has 6 divisors (see below), whose sum is σ = 73521014. Its totient is φ = 21006000.

The previous prime is 42011993. The next prime is 42012017. The reversal of 42012004 is 40021024.

It can be written as a sum of positive squares in only one way, i.e., 40347904 + 1664100 = 6352^2 + 1290^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5251497 + ... + 5251504.

Almost surely, 2^42012004 is an apocalyptic number.

It is an amenable number.

42012004 is a deficient number, since it is larger than the sum of its proper divisors (31509010).

42012004 is a wasteful number, since it uses less digits than its factorization.

42012004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10503005 (or 10503003 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 42012004 is about 6481.6667609497. Note that the first 3 decimals coincide. The cubic root of 42012004 is about 347.6357773849.

Adding to 42012004 its reverse (40021024), we get a palindrome (82033028).

The spelling of 42012004 in words is "forty-two million, twelve thousand, four".