42440755 has 16 divisors (see below), whose sum is σ = 61629120. Its totient is φ = 27389952.

The previous prime is 42440753. The next prime is 42440759. The reversal of 42440755 is 55704424.

It is a cyclic number.

It is not a de Polignac number, because 42440755 - 2¹ = 42440753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42440753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35070 + ... + 36259.

It is an arithmetic number, because the mean of its divisors is an integer number (3851820).

Almost surely, 2^42440755 is an apocalyptic number.

42440755 is a deficient number, since it is larger than the sum of its proper divisors (19188365).

42440755 is a wasteful number, since it uses less digits than its factorization.

42440755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71358.

The product of its (nonzero) digits is 22400, while the sum is 31.

The square root of 42440755 is about 6514.6569364779. The cubic root of 42440755 is about 348.8143691432.

The spelling of 42440755 in words is "forty-two million, four hundred forty thousand, seven hundred fifty-five".