126568919 has 2 divisors, whose sum is σ = 126568920. Its totient is φ = 126568918.

The previous prime is 126568913. The next prime is 126568969. The reversal of 126568919 is 919865621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126568919 is a prime.

It is a super-2 number, since 2×126568919² = 32039382513657122, 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 (126568913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63284459 + 63284460.

It is an arithmetic number, because the mean of its divisors is an integer number (63284460).

Almost surely, 2^126568919 is an apocalyptic number.

126568919 is a deficient number, since it is larger than the sum of its proper divisors (1).

126568919 is an equidigital number, since it uses as much as digits as its factorization.

126568919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 47.

The square root of 126568919 is about 11250.2852852717. The cubic root of 126568919 is about 502.0832004974.

The spelling of 126568919 in words is "one hundred twenty-six million, five hundred sixty-eight thousand, nine hundred nineteen".