42660747 has 12 divisors (see below), whose sum is σ = 62187840. Its totient is φ = 28178928.

The previous prime is 42660733. The next prime is 42660749. The reversal of 42660747 is 74706624.

42660747 is a `hidden beast` number, since 4 + 2 + 6 + 607 + 47 = 666.

It is not a de Polignac number, because 42660747 - 2¹⁵ = 42627979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42660749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20763 + ... + 22724.

It is an arithmetic number, because the mean of its divisors is an integer number (5182320).

Almost surely, 2^42660747 is an apocalyptic number.

42660747 is a deficient number, since it is larger than the sum of its proper divisors (19527093).

42660747 is a wasteful number, since it uses less digits than its factorization.

42660747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43602 (or 43599 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 42660747 is about 6531.5195016168. The cubic root of 42660747 is about 349.4160248185.

The spelling of 42660747 in words is "forty-two million, six hundred sixty thousand, seven hundred forty-seven".