126387169 has 2 divisors, whose sum is σ = 126387170. Its totient is φ = 126387168.

The previous prime is 126387167. The next prime is 126387179. The reversal of 126387169 is 961783621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81000000 + 45387169 = 9000^2 + 6737^2 .

It is a cyclic number.

It is not a de Polignac number, because 126387169 - 2¹ = 126387167 is a prime.

It is a super-2 number, since 2×126387169² = 31947432975669122, which contains 22 as substring.

Together with 126387167, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (126387167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63193584 + 63193585.

It is an arithmetic number, because the mean of its divisors is an integer number (63193585).

Almost surely, 2^126387169 is an apocalyptic number.

It is an amenable number.

126387169 is a deficient number, since it is larger than the sum of its proper divisors (1).

126387169 is an equidigital number, since it uses as much as digits as its factorization.

126387169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 126387169 is about 11242.2048104453. The cubic root of 126387169 is about 501.8427588032.

The spelling of 126387169 in words is "one hundred twenty-six million, three hundred eighty-seven thousand, one hundred sixty-nine".