126945361 has 2 divisors, whose sum is σ = 126945362. Its totient is φ = 126945360.

The previous prime is 126945359. The next prime is 126945391. The reversal of 126945361 is 163549621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126135361 + 810000 = 11231^2 + 900^2 .

It is a cyclic number.

It is not a de Polignac number, because 126945361 - 2¹ = 126945359 is a prime.

It is a super-2 number, since 2×126945361² = 32230249358840642, which contains 22 as substring.

Together with 126945359, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 126945361.

It is not a weakly prime, because it can be changed into another prime (126945391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63472680 + 63472681.

It is an arithmetic number, because the mean of its divisors is an integer number (63472681).

Almost surely, 2^126945361 is an apocalyptic number.

It is an amenable number.

126945361 is a deficient number, since it is larger than the sum of its proper divisors (1).

126945361 is an equidigital number, since it uses as much as digits as its factorization.

126945361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 37.

The square root of 126945361 is about 11267.0031951713. The cubic root of 126945361 is about 502.5804740632.

The spelling of 126945361 in words is "one hundred twenty-six million, nine hundred forty-five thousand, three hundred sixty-one".