42004411 has 4 divisors (see below), whose sum is σ = 43359424. Its totient is φ = 40649400.

The previous prime is 42004409. The next prime is 42004423. The reversal of 42004411 is 11440024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42004411 - 2¹ = 42004409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42004451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 677460 + ... + 677521.

It is an arithmetic number, because the mean of its divisors is an integer number (10839856).

Almost surely, 2^42004411 is an apocalyptic number.

42004411 is a deficient number, since it is larger than the sum of its proper divisors (1355013).

42004411 is a wasteful number, since it uses less digits than its factorization.

42004411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355012.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 42004411 is about 6481.0810055113. The cubic root of 42004411 is about 347.6148329147.

Adding to 42004411 its reverse (11440024), we get a palindrome (53444435).

The spelling of 42004411 in words is "forty-two million, four thousand, four hundred eleven".