42740355 has 32 divisors (see below), whose sum is σ = 78534144. Its totient is φ = 19443456.

The previous prime is 42740353. The next prime is 42740359. The reversal of 42740355 is 55304724.

It is not a de Polignac number, because 42740355 - 2¹ = 42740353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42740353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23592 + ... + 25338.

It is an arithmetic number, because the mean of its divisors is an integer number (2454192).

Almost surely, 2^42740355 is an apocalyptic number.

42740355 is a deficient number, since it is larger than the sum of its proper divisors (35793789).

42740355 is a wasteful number, since it uses less digits than its factorization.

42740355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1995.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 42740355 is about 6537.6108021203. The cubic root of 42740355 is about 349.6332348485.

The spelling of 42740355 in words is "forty-two million, seven hundred forty thousand, three hundred fifty-five".