42440305511 has 4 divisors (see below), whose sum is σ = 42441535632. Its totient is φ = 42439075392.

The previous prime is 42440305477. The next prime is 42440305513. The reversal of 42440305511 is 11550304424.

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 42440305511 - 2¹⁴ = 42440289127 is a prime.

It is a super-2 number, since 2×42440305511² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42440305513) 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, 561770 + ... + 632823.

It is an arithmetic number, because the mean of its divisors is an integer number (10610383908).

Almost surely, 2^42440305511 is an apocalyptic number.

42440305511 is a deficient number, since it is larger than the sum of its proper divisors (1230121).

42440305511 is a wasteful number, since it uses less digits than its factorization.

42440305511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230120.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 42440305511 its reverse (11550304424), we get a palindrome (53990609935).

The spelling of 42440305511 in words is "forty-two billion, four hundred forty million, three hundred five thousand, five hundred eleven".