126228161 has 2 divisors, whose sum is σ = 126228162. Its totient is φ = 126228160.

The previous prime is 126228121. The next prime is 126228173. The reversal of 126228161 is 161822621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101626561 + 24601600 = 10081^2 + 4960^2 .

It is a cyclic number.

It is not a de Polignac number, because 126228161 - 2¹⁴ = 126211777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126228121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63114080 + 63114081.

It is an arithmetic number, because the mean of its divisors is an integer number (63114081).

Almost surely, 2^126228161 is an apocalyptic number.

It is an amenable number.

126228161 is a deficient number, since it is larger than the sum of its proper divisors (1).

126228161 is an equidigital number, since it uses as much as digits as its factorization.

126228161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 29.

The square root of 126228161 is about 11235.1306623466. The cubic root of 126228161 is about 501.6322139573.

The spelling of 126228161 in words is "one hundred twenty-six million, two hundred twenty-eight thousand, one hundred sixty-one".