42750427 has 4 divisors (see below), whose sum is σ = 45265176. Its totient is φ = 40235680.

The previous prime is 42750419. The next prime is 42750443. The reversal of 42750427 is 72405724.

42750427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42750427 - 2³ = 42750419 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42750467) 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 3 ways as a sum of consecutive naturals, for example, 1257349 + ... + 1257382.

It is an arithmetic number, because the mean of its divisors is an integer number (11316294).

Almost surely, 2^42750427 is an apocalyptic number.

42750427 is a deficient number, since it is larger than the sum of its proper divisors (2514749).

42750427 is a wasteful number, since it uses less digits than its factorization.

42750427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514748.

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 42750427 is about 6538.3810687356. The cubic root of 42750427 is about 349.6606970237.

The spelling of 42750427 in words is "forty-two million, seven hundred fifty thousand, four hundred twenty-seven".