42888971 has 2 divisors, whose sum is σ = 42888972. Its totient is φ = 42888970.

The previous prime is 42888919. The next prime is 42888973. The reversal of 42888971 is 17988824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42888971 - 2¹⁰ = 42887947 is a prime.

It is a Sophie Germain prime.

Together with 42888973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42888973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21444485 + 21444486.

It is an arithmetic number, because the mean of its divisors is an integer number (21444486).

Almost surely, 2^42888971 is an apocalyptic number.

42888971 is a deficient number, since it is larger than the sum of its proper divisors (1).

42888971 is an equidigital number, since it uses as much as digits as its factorization.

42888971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 47.

The square root of 42888971 is about 6548.9671704781. The cubic root of 42888971 is about 350.0380121980.

The spelling of 42888971 in words is "forty-two million, eight hundred eighty-eight thousand, nine hundred seventy-one".