126868787 has 2 divisors, whose sum is σ = 126868788. Its totient is φ = 126868786.

The previous prime is 126868769. The next prime is 126868813. The reversal of 126868787 is 787868621.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126868787 - 2¹⁸ = 126606643 is a prime.

It is a super-2 number, since 2×126868787² = 32191378229702738, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126868727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63434393 + 63434394.

It is an arithmetic number, because the mean of its divisors is an integer number (63434394).

Almost surely, 2^126868787 is an apocalyptic number.

126868787 is a deficient number, since it is larger than the sum of its proper divisors (1).

126868787 is an equidigital number, since it uses as much as digits as its factorization.

126868787 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1806336, while the sum is 53.

The square root of 126868787 is about 11263.6045296344. The cubic root of 126868787 is about 502.4794008206.

The spelling of 126868787 in words is "one hundred twenty-six million, eight hundred sixty-eight thousand, seven hundred eighty-seven".