126736997 has 2 divisors, whose sum is σ = 126736998. Its totient is φ = 126736996.

The previous prime is 126736991. The next prime is 126737029. The reversal of 126736997 is 799637621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90364036 + 36372961 = 9506^2 + 6031^2 .

It is a cyclic number.

It is not a de Polignac number, because 126736997 - 2⁸ = 126736741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126736991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63368498 + 63368499.

It is an arithmetic number, because the mean of its divisors is an integer number (63368499).

Almost surely, 2^126736997 is an apocalyptic number.

It is an amenable number.

126736997 is a deficient number, since it is larger than the sum of its proper divisors (1).

126736997 is an equidigital number, since it uses as much as digits as its factorization.

126736997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304, while the sum is 50.

The square root of 126736997 is about 11257.7527508824. The cubic root of 126736997 is about 502.3053503831.

The spelling of 126736997 in words is "one hundred twenty-six million, seven hundred thirty-six thousand, nine hundred ninety-seven".