42649545 has 16 divisors (see below), whose sum is σ = 68443200. Its totient is φ = 22678464.

The previous prime is 42649543. The next prime is 42649561. The reversal of 42649545 is 54594624.

It is a happy number.

42649545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42649545 - 2¹ = 42649543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42649543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1162 + ... + 9308.

It is an arithmetic number, because the mean of its divisors is an integer number (4277700).

Almost surely, 2^42649545 is an apocalyptic number.

It is an amenable number.

42649545 is a deficient number, since it is larger than the sum of its proper divisors (25793655).

42649545 is a wasteful number, since it uses less digits than its factorization.

42649545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8504.

The product of its digits is 172800, while the sum is 39.

The square root of 42649545 is about 6530.6619113226. The cubic root of 42649545 is about 349.3854385361.

The spelling of 42649545 in words is "forty-two million, six hundred forty-nine thousand, five hundred forty-five".