126184649 has 2 divisors, whose sum is σ = 126184650. Its totient is φ = 126184648.

The previous prime is 126184633. The next prime is 126184691. The reversal of 126184649 is 946481621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109579024 + 16605625 = 10468^2 + 4075^2 .

It is an emirp because it is prime and its reverse (946481621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 126184649 - 2⁴ = 126184633 is a prime.

It is not a weakly prime, because it can be changed into another prime (126184609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63092324 + 63092325.

It is an arithmetic number, because the mean of its divisors is an integer number (63092325).

Almost surely, 2^126184649 is an apocalyptic number.

It is an amenable number.

126184649 is a deficient number, since it is larger than the sum of its proper divisors (1).

126184649 is an equidigital number, since it uses as much as digits as its factorization.

126184649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 126184649 is about 11233.1940693642. The cubic root of 126184649 is about 501.5745682645.

The spelling of 126184649 in words is "one hundred twenty-six million, one hundred eighty-four thousand, six hundred forty-nine".