442349143 has 2 divisors, whose sum is σ = 442349144. Its totient is φ = 442349142.

The previous prime is 442349113. The next prime is 442349147. The reversal of 442349143 is 341943244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442349143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 442349099 and 442349108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442349147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221174571 + 221174572.

It is an arithmetic number, because the mean of its divisors is an integer number (221174572).

Almost surely, 2^442349143 is an apocalyptic number.

442349143 is a deficient number, since it is larger than the sum of its proper divisors (1).

442349143 is an equidigital number, since it uses as much as digits as its factorization.

442349143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 34.

The square root of 442349143 is about 21032.0979219858. The cubic root of 442349143 is about 761.9416781048.

The spelling of 442349143 in words is "four hundred forty-two million, three hundred forty-nine thousand, one hundred forty-three".