42004052 has 6 divisors (see below), whose sum is σ = 73507098. Its totient is φ = 21002024.

The previous prime is 42004013. The next prime is 42004069. The reversal of 42004052 is 25040024.

It can be written as a sum of positive squares in only one way, i.e., 39488656 + 2515396 = 6284^2 + 1586^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42004052.

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, 5250503 + ... + 5250510.

It is an arithmetic number, because the mean of its divisors is an integer number (12251183).

Almost surely, 2^42004052 is an apocalyptic number.

It is an amenable number.

42004052 is a deficient number, since it is larger than the sum of its proper divisors (31503046).

42004052 is a wasteful number, since it uses less digits than its factorization.

42004052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10501017 (or 10501015 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 42004052 is about 6481.0533094552. The cubic root of 42004052 is about 347.6138425895.

Adding to 42004052 its reverse (25040024), we get a palindrome (67044076).

The spelling of 42004052 in words is "forty-two million, four thousand, fifty-two", and thus it is an eban number.