42668427 has 32 divisors (see below), whose sum is σ = 61890048. Its totient is φ = 26078976.

The previous prime is 42668411. The next prime is 42668441. The reversal of 42668427 is 72486624.

It is not a de Polignac number, because 42668427 - 2⁴ = 42668411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42668407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216493 + ... + 216689.

It is an arithmetic number, because the mean of its divisors is an integer number (1934064).

Almost surely, 2^42668427 is an apocalyptic number.

42668427 is a deficient number, since it is larger than the sum of its proper divisors (19221621).

42668427 is a wasteful number, since it uses less digits than its factorization.

42668427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339.

The product of its digits is 129024, while the sum is 39.

The square root of 42668427 is about 6532.1073934834. The cubic root of 42668427 is about 349.4369914310.

The spelling of 42668427 in words is "forty-two million, six hundred sixty-eight thousand, four hundred twenty-seven".