427742143 has 2 divisors, whose sum is σ = 427742144. Its totient is φ = 427742142.

The previous prime is 427742131. The next prime is 427742149. The reversal of 427742143 is 341247724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 427742143 - 2⁵ = 427742111 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 427742099 and 427742108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427742149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213871071 + 213871072.

It is an arithmetic number, because the mean of its divisors is an integer number (213871072).

Almost surely, 2^427742143 is an apocalyptic number.

427742143 is a deficient number, since it is larger than the sum of its proper divisors (1).

427742143 is an equidigital number, since it uses as much as digits as its factorization.

427742143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 34.

The square root of 427742143 is about 20681.9279323761. The cubic root of 427742143 is about 753.4608311149.

Adding to 427742143 its reverse (341247724), we get a palindrome (768989867).

The spelling of 427742143 in words is "four hundred twenty-seven million, seven hundred forty-two thousand, one hundred forty-three".