126632069 has 2 divisors, whose sum is σ = 126632070. Its totient is φ = 126632068.

The previous prime is 126632063. The next prime is 126632071. The reversal of 126632069 is 960236621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122367844 + 4264225 = 11062^2 + 2065^2 .

It is an emirp because it is prime and its reverse (960236621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126632069 is a prime.

It is a super-2 number, since 2×126632069² = 32071361798441522, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 126632071, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126632063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63316034 + 63316035.

It is an arithmetic number, because the mean of its divisors is an integer number (63316035).

Almost surely, 2^126632069 is an apocalyptic number.

It is an amenable number.

126632069 is a deficient number, since it is larger than the sum of its proper divisors (1).

126632069 is an equidigital number, since it uses as much as digits as its factorization.

126632069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 126632069 is about 11253.0915307750. The cubic root of 126632069 is about 502.1666893523.

The spelling of 126632069 in words is "one hundred twenty-six million, six hundred thirty-two thousand, sixty-nine".