42740111 has 4 divisors (see below), whose sum is σ = 42770232. Its totient is φ = 42709992.

The previous prime is 42740107. The next prime is 42740123. The reversal of 42740111 is 11104724.

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 42740111 - 2² = 42740107 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 (42740311) 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, 12821 + ... + 15806.

It is an arithmetic number, because the mean of its divisors is an integer number (10692558).

Almost surely, 2^42740111 is an apocalyptic number.

42740111 is a deficient number, since it is larger than the sum of its proper divisors (30121).

42740111 is a wasteful number, since it uses less digits than its factorization.

42740111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30120.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 42740111 is about 6537.5921408421. The cubic root of 42740111 is about 349.6325695080.

Adding to 42740111 its reverse (11104724), we get a palindrome (53844835).

The spelling of 42740111 in words is "forty-two million, seven hundred forty thousand, one hundred eleven".