442142471 has 2 divisors, whose sum is σ = 442142472. Its totient is φ = 442142470.

The previous prime is 442142413. The next prime is 442142507. The reversal of 442142471 is 174241244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442142471 - 2²² = 437948167 is a prime.

It is a super-3 number, since 3×442142471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442342471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221071235 + 221071236.

It is an arithmetic number, because the mean of its divisors is an integer number (221071236).

Almost surely, 2^442142471 is an apocalyptic number.

442142471 is a deficient number, since it is larger than the sum of its proper divisors (1).

442142471 is an equidigital number, since it uses as much as digits as its factorization.

442142471 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7168, while the sum is 29.

The square root of 442142471 is about 21027.1840958318. The cubic root of 442142471 is about 761.8229961815.

The spelling of 442142471 in words is "four hundred forty-two million, one hundred forty-two thousand, four hundred seventy-one".