42289229 has 2 divisors, whose sum is σ = 42289230. Its totient is φ = 42289228.

The previous prime is 42289213. The next prime is 42289259. The reversal of 42289229 is 92298224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42276004 + 13225 = 6502^2 + 115^2 .

It is a cyclic number.

It is not a de Polignac number, because 42289229 - 2⁴ = 42289213 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42289192 and 42289201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42289259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21144614 + 21144615.

It is an arithmetic number, because the mean of its divisors is an integer number (21144615).

Almost surely, 2^42289229 is an apocalyptic number.

It is an amenable number.

42289229 is a deficient number, since it is larger than the sum of its proper divisors (1).

42289229 is an equidigital number, since it uses as much as digits as its factorization.

42289229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 42289229 is about 6503.0169152479. The cubic root of 42289229 is about 348.3987507661.

The spelling of 42289229 in words is "forty-two million, two hundred eighty-nine thousand, two hundred twenty-nine".