126859819 has 2 divisors, whose sum is σ = 126859820. Its totient is φ = 126859818.

The previous prime is 126859813. The next prime is 126859829. The reversal of 126859819 is 918958621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126859819 - 2¹¹ = 126857771 is a prime.

It is a super-2 number, since 2×126859819² = 32186827353425522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126859813) 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, 63429909 + 63429910.

It is an arithmetic number, because the mean of its divisors is an integer number (63429910).

Almost surely, 2^126859819 is an apocalyptic number.

126859819 is a deficient number, since it is larger than the sum of its proper divisors (1).

126859819 is an equidigital number, since it uses as much as digits as its factorization.

126859819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 49.

The square root of 126859819 is about 11263.2064262358. The cubic root of 126859819 is about 502.4675609200.

The spelling of 126859819 in words is "one hundred twenty-six million, eight hundred fifty-nine thousand, eight hundred nineteen".