126065861 has 2 divisors, whose sum is σ = 126065862. Its totient is φ = 126065860.

The previous prime is 126065843. The next prime is 126065867. The reversal of 126065861 is 168560621.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93973636 + 32092225 = 9694^2 + 5665^2 .

It is an emirp because it is prime and its reverse (168560621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-126065861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126065867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63032930 + 63032931.

It is an arithmetic number, because the mean of its divisors is an integer number (63032931).

Almost surely, 2^126065861 is an apocalyptic number.

It is an amenable number.

126065861 is a deficient number, since it is larger than the sum of its proper divisors (1).

126065861 is an equidigital number, since it uses as much as digits as its factorization.

126065861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 126065861 is about 11227.9054591674. The cubic root of 126065861 is about 501.4171277035.

The spelling of 126065861 in words is "one hundred twenty-six million, sixty-five thousand, eight hundred sixty-one".