42740143 has 8 divisors (see below), whose sum is σ = 44164512. Its totient is φ = 41330016.

The previous prime is 42740129. The next prime is 42740149. The reversal of 42740143 is 34104724.

42740143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42740143 - 2²¹ = 40642991 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 (42740149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2721 + ... + 9637.

It is an arithmetic number, because the mean of its divisors is an integer number (5520564).

Almost surely, 2^42740143 is an apocalyptic number.

42740143 is a deficient number, since it is larger than the sum of its proper divisors (1424369).

42740143 is a wasteful number, since it uses less digits than its factorization.

42740143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7121.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 42740143 is about 6537.5945882259. The cubic root of 42740143 is about 349.6326567659.

Adding to 42740143 its reverse (34104724), we get a palindrome (76844867).

The spelling of 42740143 in words is "forty-two million, seven hundred forty thousand, one hundred forty-three".