42875447 has 2 divisors, whose sum is σ = 42875448. Its totient is φ = 42875446.

The previous prime is 42875431. The next prime is 42875453. The reversal of 42875447 is 74457824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42875447 - 2⁴ = 42875431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42875407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21437723 + 21437724.

It is an arithmetic number, because the mean of its divisors is an integer number (21437724).

Almost surely, 2^42875447 is an apocalyptic number.

42875447 is a deficient number, since it is larger than the sum of its proper divisors (1).

42875447 is an equidigital number, since it uses as much as digits as its factorization.

42875447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 250880, while the sum is 41.

The square root of 42875447 is about 6547.9345598440. The cubic root of 42875447 is about 350.0012163223.

The spelling of 42875447 in words is "forty-two million, eight hundred seventy-five thousand, four hundred forty-seven".