42742855 has 16 divisors (see below), whose sum is σ = 53706240. Its totient is φ = 32594848.

The previous prime is 42742853. The next prime is 42742859. The reversal of 42742855 is 55824724.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42742855 - 2¹ = 42742853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42742853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50526 + ... + 51364.

It is an arithmetic number, because the mean of its divisors is an integer number (3356640).

Almost surely, 2^42742855 is an apocalyptic number.

42742855 is a deficient number, since it is larger than the sum of its proper divisors (10963385).

42742855 is a wasteful number, since it uses less digits than its factorization.

42742855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310.

The product of its digits is 89600, while the sum is 37.

The square root of 42742855 is about 6537.8020006727. The cubic root of 42742855 is about 349.6400517163.

The spelling of 42742855 in words is "forty-two million, seven hundred forty-two thousand, eight hundred fifty-five".