42505411 has 8 divisors (see below), whose sum is σ = 45968384. Its totient is φ = 39070080.

The previous prime is 42505381. The next prime is 42505427. The reversal of 42505411 is 11450524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42505411 - 2¹⁹ = 41981123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42505511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3651 + ... + 9916.

It is an arithmetic number, because the mean of its divisors is an integer number (5746048).

Almost surely, 2^42505411 is an apocalyptic number.

42505411 is a deficient number, since it is larger than the sum of its proper divisors (3462973).

42505411 is a wasteful number, since it uses less digits than its factorization.

42505411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13821.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 42505411 is about 6519.6173967496. The cubic root of 42505411 is about 348.9914120102.

Adding to 42505411 its reverse (11450524), we get a palindrome (53955935).

The spelling of 42505411 in words is "forty-two million, five hundred five thousand, four hundred eleven".