42040111 has 8 divisors (see below), whose sum is σ = 44502480. Its totient is φ = 39645312.

The previous prime is 42040109. The next prime is 42040121. The reversal of 42040111 is 11104024.

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

It is not a de Polignac number, because 42040111 - 2¹ = 42040109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42040091 and 42040100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42040121) 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, 15610 + ... + 18103.

It is an arithmetic number, because the mean of its divisors is an integer number (5562810).

Almost surely, 2^42040111 is an apocalyptic number.

42040111 is a deficient number, since it is larger than the sum of its proper divisors (2462369).

42040111 is a wasteful number, since it uses less digits than its factorization.

42040111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33785.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 42040111 is about 6483.8345907341. The cubic root of 42040111 is about 347.7132855545.

Adding to 42040111 its reverse (11104024), we get a palindrome (53144135).

The spelling of 42040111 in words is "forty-two million, forty thousand, one hundred eleven".