126504919 has 2 divisors, whose sum is σ = 126504920. Its totient is φ = 126504918.

The previous prime is 126504901. The next prime is 126504947. The reversal of 126504919 is 919405621.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126504919 is a prime.

It is a super-2 number, since 2×126504919² = 32006989062393122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126504979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63252459 + 63252460.

It is an arithmetic number, because the mean of its divisors is an integer number (63252460).

Almost surely, 2^126504919 is an apocalyptic number.

126504919 is a deficient number, since it is larger than the sum of its proper divisors (1).

126504919 is an equidigital number, since it uses as much as digits as its factorization.

126504919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 126504919 is about 11247.4405532992. The cubic root of 126504919 is about 501.9985595425.

The spelling of 126504919 in words is "one hundred twenty-six million, five hundred four thousand, nine hundred nineteen".