42897143 has 2 divisors, whose sum is σ = 42897144. Its totient is φ = 42897142.

The previous prime is 42897133. The next prime is 42897167. The reversal of 42897143 is 34179824.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42897143 is a prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 42897097 and 42897106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42897133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21448571 + 21448572.

It is an arithmetic number, because the mean of its divisors is an integer number (21448572).

Almost surely, 2^42897143 is an apocalyptic number.

42897143 is a deficient number, since it is larger than the sum of its proper divisors (1).

42897143 is an equidigital number, since it uses as much as digits as its factorization.

42897143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 42897143 is about 6549.5910559362. The cubic root of 42897143 is about 350.0602426915.

The spelling of 42897143 in words is "forty-two million, eight hundred ninety-seven thousand, one hundred forty-three".