126148969 has 2 divisors, whose sum is σ = 126148970. Its totient is φ = 126148968.

The previous prime is 126148963. The next prime is 126148991. The reversal of 126148969 is 969841621.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 125148969 + 1000000 = 11187^2 + 1000^2 .

It is a cyclic number.

It is not a de Polignac number, because 126148969 - 2⁵ = 126148937 is a prime.

It is a super-2 number, since 2×126148969² = 31827124759525922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126148963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63074484 + 63074485.

It is an arithmetic number, because the mean of its divisors is an integer number (63074485).

Almost surely, 2^126148969 is an apocalyptic number.

It is an amenable number.

126148969 is a deficient number, since it is larger than the sum of its proper divisors (1).

126148969 is an equidigital number, since it uses as much as digits as its factorization.

126148969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 126148969 is about 11231.6058068292. The cubic root of 126148969 is about 501.5272886951.

The spelling of 126148969 in words is "one hundred twenty-six million, one hundred forty-eight thousand, nine hundred sixty-nine".