42404311 has 4 divisors (see below), whose sum is σ = 43772224. Its totient is φ = 41036400.

The previous prime is 42404269. The next prime is 42404359. The reversal of 42404311 is 11340424.

42404311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42404311 - 2¹⁹ = 41880023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42404911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683910 + ... + 683971.

It is an arithmetic number, because the mean of its divisors is an integer number (10943056).

Almost surely, 2^42404311 is an apocalyptic number.

42404311 is a deficient number, since it is larger than the sum of its proper divisors (1367913).

42404311 is a wasteful number, since it uses less digits than its factorization.

42404311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1367912.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 42404311 is about 6511.8592583071. The cubic root of 42404311 is about 348.7144979127.

Adding to 42404311 its reverse (11340424), we get a palindrome (53744735).

The spelling of 42404311 in words is "forty-two million, four hundred four thousand, three hundred eleven".