42240042011 has 4 divisors (see below), whose sum is σ = 42361074000. Its totient is φ = 42119010024.

The previous prime is 42240041993. The next prime is 42240042023. The reversal of 42240042011 is 11024004224.

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 42240042011 - 2⁶ = 42240041947 is a prime.

It is a super-2 number, since 2×42240042011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42240042211) 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, 60515471 + ... + 60516168.

It is an arithmetic number, because the mean of its divisors is an integer number (10590268500).

Almost surely, 2^42240042011 is an apocalyptic number.

42240042011 is a deficient number, since it is larger than the sum of its proper divisors (121031989).

42240042011 is a wasteful number, since it uses less digits than its factorization.

42240042011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121031988.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 42240042011 its reverse (11024004224), we get a palindrome (53264046235).

The spelling of 42240042011 in words is "forty-two billion, two hundred forty million, forty-two thousand, eleven".