442342471 has 2 divisors, whose sum is σ = 442342472. Its totient is φ = 442342470.

The previous prime is 442342469. The next prime is 442342501. The reversal of 442342471 is 174243244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442342471 - 2¹ = 442342469 is a prime.

It is a super-3 number, since 3×442342471³ (a number of 27 digits) contains 333 as substring.

Together with 442342469, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442342871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221171235 + 221171236.

It is an arithmetic number, because the mean of its divisors is an integer number (221171236).

Almost surely, 2^442342471 is an apocalyptic number.

442342471 is a deficient number, since it is larger than the sum of its proper divisors (1).

442342471 is an equidigital number, since it uses as much as digits as its factorization.

442342471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 31.

The square root of 442342471 is about 21031.9393066831. The cubic root of 442342471 is about 761.9378472693.

The spelling of 442342471 in words is "four hundred forty-two million, three hundred forty-two thousand, four hundred seventy-one".