42516555 has 16 divisors (see below), whose sum is σ = 68730144. Its totient is φ = 22440960.

The previous prime is 42516553. The next prime is 42516563. The reversal of 42516555 is 55561524.

It is not a de Polignac number, because 42516555 - 2¹ = 42516553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42516553) 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, 13156 + ... + 16065.

It is an arithmetic number, because the mean of its divisors is an integer number (4295634).

Almost surely, 2^42516555 is an apocalyptic number.

42516555 is a deficient number, since it is larger than the sum of its proper divisors (26213589).

42516555 is a wasteful number, since it uses less digits than its factorization.

42516555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29326.

The product of its digits is 30000, while the sum is 33.

The square root of 42516555 is about 6520.4719921184. The cubic root of 42516555 is about 349.0219086801.

It can be divided in two parts, 42516 and 555, that added together give a triangular number (43071 = T₂₉₃).

The spelling of 42516555 in words is "forty-two million, five hundred sixteen thousand, five hundred fifty-five".