126776919 has 16 divisors (see below), whose sum is σ = 171432800. Its totient is φ = 83327616.

The previous prime is 126776891. The next prime is 126776921. The reversal of 126776919 is 919677621.

It is a happy number.

It is not a de Polignac number, because 126776919 - 2⁷ = 126776791 is a prime.

It is a super-2 number, since 2×126776919² = 32144774382265122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126776519) 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 in 15 ways as a sum of consecutive naturals, for example, 74037 + ... + 75729.

It is an arithmetic number, because the mean of its divisors is an integer number (10714550).

Almost surely, 2^126776919 is an apocalyptic number.

126776919 is a deficient number, since it is larger than the sum of its proper divisors (44655881).

126776919 is a wasteful number, since it uses less digits than its factorization.

126776919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2034.

The product of its digits is 285768, while the sum is 48.

The square root of 126776919 is about 11259.5257004902. The cubic root of 126776919 is about 502.3580867044.

The spelling of 126776919 in words is "one hundred twenty-six million, seven hundred seventy-six thousand, nine hundred nineteen".