42840035 has 16 divisors (see below), whose sum is σ = 59463936. Its totient is φ = 29020128.

The previous prime is 42839999. The next prime is 42840067. The reversal of 42840035 is 53004824.

It is a cyclic number.

It is not a de Polignac number, because 42840035 - 2¹⁰ = 42839011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42839986 and 42840013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4469 + ... + 10278.

It is an arithmetic number, because the mean of its divisors is an integer number (3716496).

Almost surely, 2^42840035 is an apocalyptic number.

42840035 is a deficient number, since it is larger than the sum of its proper divisors (16623901).

42840035 is a wasteful number, since it uses less digits than its factorization.

42840035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14842.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 42840035 is about 6545.2299424848. The cubic root of 42840035 is about 349.9048312678.

Adding to 42840035 its reverse (53004824), we get a palindrome (95844859).

The spelling of 42840035 in words is "forty-two million, eight hundred forty thousand, thirty-five".