42106004 has 6 divisors (see below), whose sum is σ = 73685514. Its totient is φ = 21053000.

The previous prime is 42105977. The next prime is 42106013. The reversal of 42106004 is 40060124.

It can be written as a sum of positive squares in only one way, i.e., 24900100 + 17205904 = 4990^2 + 4148^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5263247 + ... + 5263254.

It is an arithmetic number, because the mean of its divisors is an integer number (12280919).

Almost surely, 2^42106004 is an apocalyptic number.

It is an amenable number.

42106004 is a deficient number, since it is larger than the sum of its proper divisors (31579510).

42106004 is a wasteful number, since it uses less digits than its factorization.

42106004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526505 (or 10526503 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 42106004 is about 6488.9139306975. The cubic root of 42106004 is about 347.8948574773.

Adding to 42106004 its reverse (40060124), we get a palindrome (82166128).

The spelling of 42106004 in words is "forty-two million, one hundred six thousand, four".